toolchain: enable musl for sh

The SuperH architecture is supported by the musl libc since some time
now, so let's enable it.
Tested via qemu_sh4_r2d_defconfig.

Signed-off-by: Lionel Orry <lionel.orry@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

toolchain/toolchain-buildroot/Config.in

@@ -85,7 +85,7 @@ config BR2_TOOLCHAIN_BUILDROOT_MUSL
 	bool "musl (experimental)"
 	depends on BR2_aarch64 || BR2_arm || BR2_armeb || BR2_i386 || \
 		BR2_microblaze || BR2_mips || BR2_mipsel || BR2_powerpc || \
-		BR2_x86_64
+		BR2_sh || BR2_x86_64
 	depends on !BR2_powerpc_SPE # not supported, build breaks
 	select BR2_TOOLCHAIN_USES_MUSL
 	help