ARM: OMAP2+: Remove legacy smsc911x and smc91x GPMC support

When connecting an ethernet chip to the GPMC, such as smc91x
or smsc911x, a GPIO has to be requested to be used as an IRQ
and also the IO memory for a GPMC chip-select.

When booting with DT the chip-select allocation is handled
in a generic manner in the GPMC driver and the GPIO to IRQ
mapping is made by the DT core so this code is not needed
anymore now that mach-omap2 related boards are DT-only.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/Makefile

@@ -249,7 +249,5 @@ obj-y					+= $(onenand-m) $(onenand-y)
 nand-$(CONFIG_MTD_NAND_OMAP2)		:= gpmc-nand.o
 obj-y					+= $(nand-m) $(nand-y)
 
-smsc911x-$(CONFIG_SMSC911X)		:= gpmc-smsc911x.o
-obj-y					+= $(smsc911x-m) $(smsc911x-y)
 
 obj-y					+= common-board-devices.o dss-common.o