Revert "gpu: ion: use vmalloc to allocate page array to map kernel"
Revert "gpu: ion: use vmalloc to allocate page array to map kernel"

This reverts commit 1e8e16f7ceb89f07967b57e6850fbff9a935b706.

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas