kernel: Remove gpio-pwm patches

There is no platform using the gpio-pwm driver, yet these patches break the
generic PWM framework that is in upstream. So just remove them.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37490 3c298f89-4303-0410-b956-a3cf2f4a3e73