mtd: onenand: omap: cleanup gpmc dependency
mtd: onenand: omap: cleanup gpmc dependency

requesting, freeing gpmc cs is now handled fully
by gpmc, remove left out gpmc dependency as well
as unnecessary include of gpmc.h

Signed-off-by: Afzal Mohammed <e2d4496628a80d9d19704e42be4aec0b278f228a@ti.com>

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