amlogic: Introduce directory parameters in the makefiles

Make the platform name a parameter for the source directories. Besides a
cosmetic fix, this is going to be helpful when reusing the same Makefile
for different SoCs.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Change-Id: I307897a21800cca8ad68a5ab8972d27e9356ff2a
2 files changed