feat(imx): add dummy 'plat_mboot_measure_key' function

Added dummy implementation of 'plat_mboot_measure_key'
function for IMX platform.

Change-Id: Ib41fd86a9da330f62561707bda7d16f2825c0a7f
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
1 file changed