Change UUID to little-endian in SP manifest

Currently in the SP manifest the UUID is represented as big-endian.
Change this to little-endian to get better aligned with OP-TEE and TF-A
which expect this format.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I1ed9e64aab624121fa2c6586c64036f60d727fc8
19 files changed