ec/hp/kbc1126: Include early_init.c in bootblock

Change-Id: I198709efe1eb5d2022d0fbd640901238e696eaa6
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36885
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/ec/hp/kbc1126/Makefile.inc

@@ -53,6 +53,7 @@ ifeq ($(CONFIG_KBC1126_FIRMWARE),)
 endif
 
 ramstage-y += ec.c
+bootblock-y += early_init.c
 romstage-y += early_init.c
 
 endif