sysdeps/managarm: Implement sys_statx #4337

Job	Run time
Compile sysdeps (dripos)	2m 16s
Build mlibc (x86_64, mlibc, gcc)	3m 54s
Compile sysdeps (lemon)	2m 19s
Build mlibc (x86_64, mlibc-static, gcc)	3m 21s
Compile sysdeps (aero)	2m 29s
Build mlibc (x86_64, mlibc-shared, gcc)	3m 13s
Build mlibc (x86_64, mlibc-ansi-only, gcc)	5m 28s
Compile sysdeps (ironclad)	3m 6s
Compile sysdeps (lyre)	2m 22s
Build mlibc (x86_64, mlibc-headers-only, gcc)	2m 25s
Compile sysdeps (keyronex)	2m 22s
Build mlibc (riscv64, mlibc, gcc)	4m 1s
Compile sysdeps (managarm)	2m 38s
Build mlibc (riscv64, mlibc-static, gcc)	4m 48s
Compile sysdeps (vinix)	2m 43s
Build mlibc (riscv64, mlibc-shared, gcc)	3m 17s
Compile sysdeps (astral)	2m 26s
Build mlibc (riscv64, mlibc-ansi-only, gcc)	2m 57s
Build mlibc (riscv64, mlibc-headers-only, gcc)	2m 25s
Build mlibc (aarch64, mlibc, gcc)	4m 4s
Build mlibc (aarch64, mlibc-static, gcc)	3m 21s
Build mlibc (aarch64, mlibc-shared, gcc)	3m 48s
Build mlibc (aarch64, mlibc-ansi-only, gcc)	3m 15s
Build mlibc (aarch64, mlibc-headers-only, gcc)	2m 3s
Build mlibc (x86, mlibc, gcc)	4m 11s
Build mlibc (x86, mlibc-static, gcc)	4m 32s
Build mlibc (x86, mlibc-shared, gcc)	3m 18s
Build mlibc (x86, mlibc-ansi-only, gcc)	3m 10s
Build mlibc (x86, mlibc-headers-only, gcc)	2m 8s
Build mlibc (m68k, mlibc, gcc)	3m 39s
Build mlibc (m68k, mlibc-static, gcc)	3m 8s
Build mlibc (m68k, mlibc-shared, gcc)	3m 10s
Build mlibc (m68k, mlibc-ansi-only, gcc)	3m 20s
Build mlibc (m68k, mlibc-headers-only, gcc)	2m 4s
Build mlibc (x86_64, mlibc, clang)	3m 23s
	1h 51m 4s

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