gs201: Add pixel_mali_soc config var

* Add gs201 soc soong_config_variable
* Remove unused mali soong namespaces

Test: Build UMD from source for gs101, gs201 and zuma
Test: checkbuild
Bug: 185349920
Bug: 174232579
Change-Id: Ie175e70a4a61a14e93225522735e1b789c28f6fa
Signed-off-by: Jack Diver <diverj@google.com>
1 file changed