Revert "msm: kgsl: Treat 0x0 as valid GPU pagetable physical address"

This reverts commit b14637b53d51bcfe1cd5b4cf86eaa57df587d7ba.

Change-Id: I8fdb90ae796499cc6026a6b4c2aded330071fd6b
Revert "msm: kgsl: Fix mem leak when page allocation fails"

This reverts commit bb8ae18b99096bae1085d23f8746358da43a5d41.

Change-Id: I90160c0cd9eaad43d5fcfb8f3599aeb192abf53e
Revert "msm: kgsl: build only a3xx for mako, remove a2xx and a4xx"

This reverts commit 46328e83c9c02951fa38a530be866ffdcdf77b0e.

Change-Id: I6e80d634b57ec7a1c3b981dc4af17d5f1a7dac28
Merge "Revert "msm: kgsl: Treat 0x0 as valid GPU pagetable physical address"" into kk4.4
Merge "Revert "msm: kgsl: Fix mem leak when page allocation fails"" into kk4.4
Merge "Revert "msm: kgsl: build only a3xx for mako, remove a2xx and a4xx"" into kk4.4