mach-snapdragon: allocate memory for DT overlays

Allocate a 1 MiB LMB region for fdtoverlay_addr_r when
CONFIG_OF_LIBFDT_OVERLAY is enabled, allowing runtime application of
DT overlays on Snapdragon platforms.

This is useful for Android-based boot flows where the final DT passed
to the kernel must contain modified /firmware/android/fstab entries.
One use case is redirecting system and vendor partitions to microSD
storage instead of internal eMMC without rebuilding the base DTB.

The allocation is conditional on CONFIG_OF_LIBFDT_OVERLAY and has no
effect on boards that do not enable overlay support.

Signed-off-by: Antony Kurniawan Soemardi <[email protected]>
Reviewed-by: Sumit Garg <[email protected]>
Reviewed-by: Casey Connolly <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Casey Connolly <[email protected]>

0 files changed, 0 insertions, 0 deletions