[RFC v2 2/4] ARM: mm: Add LPAE support for outer shared

Support early init selection of inner or outer shared page table attributes. In LPAE shared is 3 valued: non-shared, inner-shared, and outer-shared. Provide a mask and both shared values. Shared value in use is stored in variables. The old constants are eliminated to avoid accidental use.

[RFC v2 2/4] ARM: mm: Add LPAE support for outer shared

Support early init selection of inner or outer shared page table attributes. In LPAE shared is 3 valued: non-shared, inner-shared, and outer-shared. Provide a mask and both shared values. Shared value in use is stored in variables. The old constants are eliminated to avoid accidental use.