This reverts commit a7e4f905d2.
The description originally written by Sughosh is still valid
even after the commit 47a25e81d3 ("Revert "efi_capsule: Move signature
from DTB to .rodata"") was applied.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
c5e81fddf2