script/relocate_sdk.py: check dynamic loader arch before relocating interpreter

script/relocate_sdk.py: check dynamic loader arch before relocating interpreter

While multiple dynamic loader existed, in order to make executable file is
interpreted by the expected dynamic loader, relocating interpreter only if
the new dynamic loader and executable file have the same arch

[ YOCTO #15722 ]

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>