mali: Fix commit 2b47db1501

Compile for ARCH_SUN4I fails, because __phys_2_bus(x) is not defined.
Have to include mach/memory.h
mali: fix compilation for sun[45]i

Signed-off-by: Alejandro Mery <amery@geeks.cl>
Merge remote-tracking branch 'upstream/stage/sunxi-3.4' into stage/sunxi-3.4