plat: marvell: armada: a3k: Build intermediate files in $(BUILD_PLAT) directory

Currently a3700_common.mk makefile builds intermediate files in TF-A top
level directory and also outside of the TF-A tree. This change fixes this
issue and builds all intermediate files in $(BUILD_PLAT) directory.

Part of this change is also removal of 'rm' and 'mv' commands as there is
no need to remove or move intermediate files from outside of the TF-A build
tree.

Signed-off-by: Pali Rohár <pali@kernel.org>
Change-Id: I72e3a3024bd3fdba1b991a220184d750029491e9
1 file changed