Revert "staging: android: Fix two checkpatch issues in binder.c"

This reverts commit 47d542a232128ccdfeccf705aafd275ffb7178e9.
Revert "Staging: android: binder: Allow using highmem for binder buffers"

This reverts commit c7c95029194484d699fb2c6f2d268b1b4072c784.
Revert "Staging: android: binder: Fix memory leak on thread/process exit"

This reverts commit 2ae1d9fb0b660cf33b9189ec644a2a02bf58e75c.
Revert "staging: android: Avoid using camelcase in binder.h"

This reverts commit 3ab78d66bb43a79b20ea9f18514c297ca1e589f3.
Revert "tmpfs: fix mempolicy object leaks"

This reverts commit 2ce5f81676c01f1d5b0d9c2acaf842964984026d.