Currently supported HPE 1920 devices all have an RTL838x SoC, but there
are larger switches with RTL839x SoCs, although currently not supported.
Move the build recipe to common.mk so the larger devices can also make
use of the recipe, while moving it out of the main Makefile.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
The D-Link DGS-1210 device series currently has supported devices with
both RTL838x and RTL839x SoCs. An image build recipe has been defined in
both subtarget makefiles, but these are mostly identical, save for the
SOC variable.
Move the SOC variable from the DGS-1210 build recipes to the applicable
devices, and put the remaining duplicate code in a shared Makefile.
Signed-off-by: Sander Vanheule <sander@svanheule.net>