gpio: move mpc8xxx/512x gpio driver to drivers/gpio

Move the driver to the place where it is expected to be nowadays. Also
rename its CONFIG-name to match the rest and adapt the defconfigs.
Finally, move selection of REQUIRE_GPIOLIB or WANTS_OPTIONAL_GPIOLIB to
the platforms, because this option is per-platform and not per-driver.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Anatolij Gustschin <agust@denx.de>

1 files changed, 6 insertions, 3 deletions

diff --git a/arch/powerpc/platforms/83xx/Kconfig b/arch/powerpc/platforms/83xx/Kconfig
index 73f4135f3a1a..670a033264c0 100644
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -114,18 +114,21 @@ config KMETER1
 
 endif
 
-# used for usb
+# used for usb & gpio
 config PPC_MPC831x
         bool
+        select ARCH_WANT_OPTIONAL_GPIOLIB
 
 # used for math-emu
 config PPC_MPC832x
         bool
 
-# used for usb
+# used for usb & gpio
 config PPC_MPC834x
         bool
+        select ARCH_WANT_OPTIONAL_GPIOLIB
 
-# used for usb
+# used for usb & gpio
 config PPC_MPC837x
         bool
+        select ARCH_WANT_OPTIONAL_GPIOLIB