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: Kees Cook <keescook@chromium.org>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index fda37c9..c4fbb21 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -221,7 +221,7 @@
 	bool
 	depends on !ARCH_FPGA
 	select GENERIC_GPIO
-	select GPIO_SYSFS if EXPERIMENTAL
+	select GPIO_SYSFS
 	default y
 
 if PUV3_NB0916