ARM: pxa: fix build breakage on PXA3xx

Commit 917195d6

 ("ARM: pxa: consolidate GPIO chip platform data")
tried to reuse the same instance of platform data for PXA25x and PXA27x
GPIO controllers by moving it into arch/arm/mach-pxa/devices.c
Unfortunately this file is built for other PXA variants which resulted
in the following error:

>> arm-linux-gnueabi-ld: arch/arm/mach-pxa/devices.o:(.data+0x167c): undefined reference to `gpio_set_wake'

Fix this by using #ifdef around PXA25x and PXA27x GPIO controller device
structures and associated data.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407112039.cyyIQ3Js-lkp@intel.com/
Fixes: 917195d6

 ("ARM: pxa: consolidate GPIO chip platform data")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>