collie_battery: Convert to gpio_request_array() / gpio_free_array()
collie_battery: Convert to gpio_request_array() / gpio_free_array()

As suggested by Igor Grinberg, this change make the implementation looks
simpler.

Signed-off-by: Axel Lin <b6ffd6973e972cb999e8e535ab74da7fee0c035f@gmail.com>
Signed-off-by: Anton Vorontsov <1d765a3da7f714ffaadb979466c507aa3415181f@gmail.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas