util/amdfwtool: Add build rules for amdfwread

Add build rules to build amdfwread tool. Also mark this as a dependency
either while building tools or amdfw.rom.

BUG=None
TEST=Build and boot to OS in Skyrim with CBFS verification enabled.

Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: I3fee4e4c77f62bb2840270b3eaaa58b894780d75
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66939
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/Makefile.inc b/Makefile.inc
index 0ed205f..563a2bc 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -600,6 +600,7 @@
 IFDTOOL:=$(objutil)/ifdtool/ifdtool
 
 AMDFWTOOL:=$(objutil)/amdfwtool/amdfwtool
+AMDFWREAD:=$(objutil)/amdfwtool/amdfwread
 
 APCB_EDIT_TOOL:=$(top)/util/apcb/apcb_edit.py
 
@@ -701,7 +702,7 @@
 include util/crossgcc/Makefile.inc
 
 .PHONY: tools
-tools: $(objutil)/kconfig/conf $(objutil)/kconfig/toada $(CBFSTOOL) $(objutil)/cbfstool/cbfs-compression-tool $(FMAPTOOL) $(RMODTOOL) $(IFWITOOL) $(objutil)/nvramtool/nvramtool $(objutil)/sconfig/sconfig $(IFDTOOL) $(CBOOTIMAGE) $(AMDFWTOOL) $(AMDCOMPRESS) $(FUTILITY) $(BINCFG) $(IFITTOOL) $(objutil)/supermicro/smcbiosinfo $(CSE_FPT) $(CSE_SERGER)
+tools: $(objutil)/kconfig/conf $(objutil)/kconfig/toada $(CBFSTOOL) $(objutil)/cbfstool/cbfs-compression-tool $(FMAPTOOL) $(RMODTOOL) $(IFWITOOL) $(objutil)/nvramtool/nvramtool $(objutil)/sconfig/sconfig $(IFDTOOL) $(CBOOTIMAGE) $(AMDFWTOOL) $(AMDCOMPRESS) $(FUTILITY) $(BINCFG) $(IFITTOOL) $(objutil)/supermicro/smcbiosinfo $(CSE_FPT) $(CSE_SERGER) $(AMDFWREAD)
 
 ###########################################################################
 # Common recipes for all stages