Support the ESP32-S2 and ESP32-S3 as well, use spin when supported

Cargo.toml

@@ -5,15 +5,19 @@ edition = "2021"
 
 [dependencies]
 bare-metal = "1.0.0"
-log        = "0.4.17"
-
-[dependencies.linked_list_allocator]
-version          = "0.9.1"
-default-features = false
-features         = ["const_mut_refs"]
 
 [target.'cfg(target_arch = "riscv32")'.dependencies]
-riscv = "0.8.0"
+linked_list_allocator = { version = "0.9.1", default-features = false, features = ["const_mut_refs"] }
+riscv                 = "0.8.0"
 
 [target.xtensa-esp32-none-elf.dependencies]
-xtensa-lx = { version = "0.7.0",  features = ["esp32"] }
+linked_list_allocator = "0.9.1"
+xtensa-lx             = { version = "0.7.0",  features = ["esp32"] }
+
+[target.xtensa-esp32s2-none-elf.dependencies]
+linked_list_allocator = { version = "0.9.1", default-features = false, features = ["const_mut_refs"] }
+xtensa-lx             = { version = "0.7.0",  features = ["esp32s2"] }
+
+[target.xtensa-esp32s3-none-elf.dependencies]
+linked_list_allocator = "0.9.1"
+xtensa-lx             = { version = "0.7.0",  features = ["esp32s3"] }