Correct ordering of log levels in documentation
Correct ordering of log levels in documentation

Changed the ordering of the log levels in the documentation to
mate the code

Change-Id: Ief1930b73d833fdf675b039c98046591c0c264c1
Signed-off-by: Daniel Boulby <326dadf32cdcf0f6ec473c2dfe75080bda3b29ff@arm.com>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware