Revert "gpu: ion: Refactor locking"
Revert "gpu: ion: Refactor locking"

This reverts commit 1b1bff3c75e13f3ca9f152bff247cb3683468f59.

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