Makefile.inc: Use $(MAINBOARDDIR)

Commit 93ef3ff makes the following only print the part number when
the ROM is built. In Makefile.inc, $(MAINBOARDDIR) is the variable
that has the quotes stripped off from $(CONFIG_MAINBOARD_DIR), so
use it instead of $(MAINBOARD_DIR).

build_complete:: coreboot
        printf "\nBuilt %s (%s)\n" $(MAINBOARD_DIR) \
                $(CONFIG_MAINBOARD_PART_NUMBER)

Change-Id: I729a583182937db7a926eb75aa28dfb53360046c
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://review.coreboot.org/16410
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

Makefile.inc

@@ -60,7 +60,7 @@ coreboot: build-dirs $(obj)/coreboot.rom $(obj)/cbfstool $(obj)/rmodtool $(obj)/
 # targets after the build completes by creating a Makefile.inc in the
 # site-local directory with a target named 'build_complete::'
 build_complete:: coreboot
-	printf "\nBuilt %s (%s)\n" $(MAINBOARD_DIR) \
+	printf "\nBuilt %s (%s)\n" $(MAINBOARDDIR) \
 		$(CONFIG_MAINBOARD_PART_NUMBER)
 
 # This target can be used to run rules after all files were added to CBFS,

src/soc/intel/braswell/Makefile.inc

@@ -57,7 +57,7 @@ CPPFLAGS_common += -I$(src)/soc/intel/braswell/
 CPPFLAGS_common += -I$(src)/soc/intel/braswell/include
 CPPFLAGS_common += -I$(src)/vendorcode/intel/fsp/fsp1_1/braswell
 
-CPPFLAGS_common += -I3rdparty/blobs/mainboard/$(MAINBOARD_DIR)
+CPPFLAGS_common += -I3rdparty/blobs/mainboard/$(MAINBOARDDIR)
 
 ifneq ($(CONFIG_GOP_SUPPORT),y)
 ifneq ($(CONFIG_VGA_BIOS_FILE),)

src/soc/intel/skylake/Makefile.inc

@@ -107,7 +107,7 @@ CPPFLAGS_common += -I$(src)/vendorcode/intel/fsp/fsp2_0/skykabylake
 endif
 
 # Currently used for microcode path.
-CPPFLAGS_common += -I3rdparty/blobs/mainboard/$(MAINBOARD_DIR)
+CPPFLAGS_common += -I3rdparty/blobs/mainboard/$(MAINBOARDDIR)
 
 ROMCCFLAGS := -mcpu=p4 -fno-simplify-phi -O2