This fixes this section mismatch warning:
The function spi_gpio_custom_get_slave_cs() references
the variable __initdata bus_nump.
This is often because spi_gpio_custom_get_slave_cs lacks a __initdata
annotation or the annotation of bus_nump is wrong.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 48930