ks8851: Add GPIO configuration platform data

Add platform data for the KS8851 SPI Ethernet device to
enable proper GPIO configuration for the reset and
interrupt pins.

Change-Id: I79adae4628f38a2ca5bc17825258c41ab5e1623d
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
(cherry picked from commit 93d79ecd11a79a097a5c051438d9c3502902af6e)

Conflicts:

	arch/arm/mach-msm/board-msm8960.c
	drivers/net/ks8851.c