Revert "Removed Kernel FLAG unaligned-access that is the SOD bug."

This reverts commit 22d248e2484a28bbc8055247c82bfc64653ab24b.
Revert "ARM: Disable unaligned instructions due to unexplanable unaligned exceptions"

This reverts commit 1939c55a3e9c98779d94f5ebf005cb2019721481.
Enable firmware load helper.