unicore: do away with ARCH_REQUIRE_GPIOLIB

Replace "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB"
as this can now be selected directly.

Cc: Michael Büsch <m@bues.ch>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/unicore32/Kconfig

@@ -80,7 +80,7 @@ config ARCH_PUV3
 	select CPU_UCV2
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CLK
-	select ARCH_REQUIRE_GPIOLIB
+	select GPIOLIB
 
 # CONFIGs for ARCH_PUV3