libeigen: Update GPL-3.0-only to GPL-2.0-only

libeigen source contains GPL-3.0-only code but it is
not being packaged hence update LICENSE with GPL-2.0-only

Below are the GPL-3.0-only files from libeigen source

bench/btl/actions/action_aat_product.hh
bench/btl/actions/action_ata_product.hh
bench/btl/actions/action_atv_product.hh
bench/btl/actions/action_axpby.hh
bench/btl/actions/action_axpy.hh
bench/btl/actions/action_cholesky.hh
bench/btl/actions/action_ger.hh
bench/btl/actions/action_hessenberg.hh
bench/btl/actions/action_lu_decomp.hh
bench/btl/actions/action_lu_solve.hh
bench/btl/actions/action_matrix_matrix_product_bis.hh
bench/btl/actions/action_matrix_matrix_product.hh
bench/btl/actions/action_matrix_vector_product.hh
bench/btl/actions/action_partial_lu.hh
bench/btl/actions/action_rot.hh
bench/btl/actions/action_symv.hh
bench/btl/actions/action_syr2.hh
bench/btl/actions/action_trisolve.hh
bench/btl/actions/action_trisolve_matrix.hh
bench/btl/actions/action_trmm.hh
bench/btl/COPYING
bench/btl/data/mean.cxx
bench/btl/data/regularize.cxx
bench/btl/data/smooth.cxx
bench/btl/generic_bench/bench.hh
bench/btl/generic_bench/bench_parameter.hh
bench/btl/generic_bench/btl.hh
bench/btl/generic_bench/init/init_function.hh
bench/btl/generic_bench/init/init_matrix.hh
bench/btl/generic_bench/init/init_vector.hh
bench/btl/generic_bench/static/bench_static.hh
bench/btl/generic_bench/static/intel_bench_fixed_size.hh
bench/btl/generic_bench/static/static_size_generator.hh
bench/btl/generic_bench/timers/mixed_perf_analyzer.hh
bench/btl/generic_bench/timers/portable_perf_analyzer.hh
bench/btl/generic_bench/timers/portable_perf_analyzer_old.hh
bench/btl/generic_bench/timers/portable_timer.hh
bench/btl/generic_bench/timers/STL_perf_analyzer.hh
bench/btl/generic_bench/timers/STL_timer.hh
bench/btl/generic_bench/utils/size_lin_log.hh
bench/btl/generic_bench/utils/size_log.hh
bench/btl/generic_bench/utils/xy_file.hh
bench/btl/libs/BLAS/blas_interface.hh
bench/btl/libs/BLAS/main.cpp
bench/btl/libs/blaze/blaze_interface.hh
bench/btl/libs/blaze/main.cpp
bench/btl/libs/blitz/blitz_interface.hh
bench/btl/libs/blitz/blitz_LU_solve_interface.hh
bench/btl/libs/blitz/btl_blitz.cpp
bench/btl/libs/blitz/btl_tiny_blitz.cpp
bench/btl/libs/blitz/tiny_blitz_interface.hh
bench/btl/libs/eigen2/btl_tiny_eigen2.cpp
bench/btl/libs/eigen2/eigen2_interface.hh
bench/btl/libs/eigen2/main_adv.cpp
bench/btl/libs/eigen2/main_linear.cpp
bench/btl/libs/eigen2/main_matmat.cpp
bench/btl/libs/eigen2/main_vecmat.cpp
bench/btl/libs/eigen3/btl_tiny_eigen3.cpp
bench/btl/libs/eigen3/eigen3_interface.hh
bench/btl/libs/eigen3/main_adv.cpp
bench/btl/libs/eigen3/main_linear.cpp
bench/btl/libs/eigen3/main_matmat.cpp
bench/btl/libs/eigen3/main_vecmat.cpp
bench/btl/libs/gmm/gmm_interface.hh
bench/btl/libs/gmm/gmm_LU_solve_interface.hh
bench/btl/libs/gmm/main.cpp
bench/btl/libs/mtl4/main.cpp
bench/btl/libs/mtl4/mtl4_interface.hh
bench/btl/libs/mtl4/mtl4_LU_solve_interface.hh
bench/btl/libs/STL/main.cpp
bench/btl/libs/STL/STL_interface.hh
bench/btl/libs/tvmet/main.cpp
bench/btl/libs/tvmet/tvmet_interface.hh
bench/btl/libs/ublas/main.cpp
bench/btl/libs/ublas/ublas_interface.hh

libeigen project dropped all GPL code in their 'master'
branch and moved to 'Apache-2.0'

Signed-off-by: Akash Hadke <[email protected]>
Signed-off-by: Khem Raj <[email protected]>

meta-oe/recipes-support/libeigen/libeigen_3.4.0.bb

@@ -1,6 +1,6 @@
 DESCRIPTION = "Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms."
 HOMEPAGE = "http://eigen.tuxfamily.org/"
-LICENSE = "MPL-2.0 & Apache-2.0 & BSD-3-Clause & GPL-3.0-only & LGPL-2.1-only & MINPACK"
+LICENSE = "MPL-2.0 & Apache-2.0 & BSD-3-Clause & GPL-2.0-only & LGPL-2.1-only & MINPACK"
 LIC_FILES_CHKSUM = "file://COPYING.MPL2;md5=815ca599c9df247a0c7f619bab123dad \
                     file://COPYING.BSD;md5=2dd0510ee95e59ca28834b875bc96596 \
                     file://COPYING.GPL;md5=d32239bcb673463ab874e80d47fae504 \