Revert "Panic if manifest isn't aligned."

This reverts commit 1de06beb55e96a1722edf1ca8dfd75337f9a6ab2. Parsing
is now done by libfdt which handles unaligned memory accesses.

Bug: 150587116
Change-Id: I4cfc3f4cc571f5ec7573688c0b780497f6ada82a
2 files changed