mediatek: mt8183: Support coreboot configuration

When built for coreboot, we want to enable coreboot library to have
better integration. For example, serial console should be initialized by
coreboot_serial instead of hard-coded values.

Most coreboot configuration will enable memory console, which needs
larger XLAT_TABLES so MAX_XLAT_TABLES is increased; and to support that,
TZRAM_SIZE also need to be enlarged.

Change-Id: I08cf22df2fa26e48284e323d22ad8ce73a6ea803
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
diff --git a/plat/mediatek/mt8183/platform.mk b/plat/mediatek/mt8183/platform.mk
index 8fb0151..09fd133 100644
--- a/plat/mediatek/mt8183/platform.mk
+++ b/plat/mediatek/mt8183/platform.mk
@@ -70,3 +70,5 @@
 MACH_MT8183 := 1
 $(eval $(call add_define,MACH_MT8183))
 
+include lib/coreboot/coreboot.mk
+