One of the bitbanged SPI hosts had wrongly named GPIO lines due to
sloppiness by yours truly.

Cc: arm@kernel.org
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>