Makefile: Allow arch post-link hook

This commit allows an architecture to provide a Makefile.postlink whose
u-boot target gets invoked after the u-boot ELF is linked. This will be
of use for MIPS in a following commit.

This mirrors Linux commit fbe6e37dab97 ("kbuild: add arch specific
post-link Makefile").

Signed-off-by: Paul Burton <[email protected]>
Cc: Daniel Schwierzeck <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: [email protected]
Reviewed-by: Tom Rini <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Daniel Schwierzeck <[email protected]>
Tested-by: Daniel Schwierzeck <[email protected]>

0 files changed, 0 insertions, 0 deletions