msm8960: Add configuration support for GPIO's and led's

Add pwm support for GPIO 24, 25, 26
Add pwm and manual mode support for drv_led0, drv_led1
and drv_led2.
Add pwm and manual mode support for keypad_drv.

Change-Id: I5f4f2dd9c7576a9109f0e8952b89f0d083e4f55a
CRs-Fixed: 317020
7 files changed