plat: marvell: armada: a3k: rename the UART images archive

Add *.bin extension to UART recovery images archive name.
Such naming will cause the UART recovery images to be copied to the
Buildroot output folder upon flash image build.

Change-Id: I6992df1ab2ded725bed58e5baf245ae92c4cb289
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
1 file changed