arch qdsp6: replace pmem deprecated API
driver msm/vidc: replace pmem deprecated API
Revert "msm: emulation of the deprecated pmem_kalloc and pmem_kfree"

Migration from the pmem deprecated API to the new one completed on every drivers.

This reverts commit ab3be67e14852c2c58c9159f9207cad1d2a36c76.