fix(arm_fgpa): allow build after MAKE_* changes

Commit 434d0491c550 ("refactor(makefile): remove BL prefixes in build
macros") changed the MAKE_S macro to expect "bl31" instead of just "31".

Adjust our calls to MAKE_S and MAKE_LD to fix the build for arm_fpga.

Change-Id: I2743e421c10eaecb39bfa4515ea049a1b8d18fcb
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
1 file changed