arch/unicore32: remove CONFIG_EXPERIMENTAL

This config item has not carried much meaning for a while now and is
almost always enabled by default. As agreed during the Linux kernel
summit, remove it.

CC: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: NKees Cook <keescook@chromium.org>
Acked-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>

arch/unicore32/Kconfig

@@ -221,7 +221,7 @@ config PUV3_GPIO
 	bool
 	depends on !ARCH_FPGA
 	select GENERIC_GPIO
-	select GPIO_SYSFS if EXPERIMENTAL
+	select GPIO_SYSFS
 	default y
 
 if PUV3_NB0916