csky: Enable the gcov function

Support the gcov function in csky architecture.
Signed-off-by: Ma Jun <majun258@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>

arch/csky/Kconfig

@@ -3,6 +3,7 @@ config CSKY
 	def_bool y
 	select ARCH_32BIT_OFF_T
 	select ARCH_HAS_DMA_PREP_COHERENT
+	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
 	select ARCH_USE_BUILTIN_BSWAP