sdk: switch make.conf fragments for internal sdk builds
Use the new dedicated make.conf fragment for internal sdk builds rather
than the one shared between boards and the sdk.
BUG=chromium:440498
TEST=updating an sdk has same settings, as does creating a new sdk
CQ-DEPEND=CL:391592
Change-Id: I2f851acd24c8d1d2248ac8fde1bfdacb24006d01
Reviewed-on: https://chromium-review.googlesource.com/392166
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
2 files changed
