kernel/3.1[02]: add Winbond W25X05 SPI flash support

It is used on newer RouterBOARDs.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39086 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: rb95x: nuke rb95x_gpio_init

Set up the chipselect GPIO directly in rb95x_nand_init
instead.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39087 3c298f89-4303-0410-b956-a3cf2f4a3e73