x86: parameterize asl_template for CBFS inclusion

The asl_template previously unconditionally included
dsdt.aml. However, COMPILE_IN_DSDT=y results in the
dsdt.aml being linked directly into ramstage. Thus
the information is duplicated.

The inclusion of this file unconditionally throws
some errors as certain assets need to be included
in CBFS. However, as there isn't fine-grained
ordering control in how files are added fixed
resource requirements for other assets collide
result in failure to build.

To remedy both things, provide a 2nd argument to
asl_template which defaults to 'y' for CBFS
addition. In the COMPILE_IN_DSDT=y case pass
'n' so that dsdt.aml is no longer added.

BUG=chrome-os-partner:43419
BRANCH=None
TEST=For glados:
     Built with COMPILE_IN_DSDT=y. dsdt.aml not included.
     Built with COMPILE_IN_DSDT=n. dsdt.aml was included.

Original-Change-Id: I4767e5be2915c1732251fe415017f30314c5efc9
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/289840
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

Change-Id: Id1828627ba0a034eb05b2fe23be76e19f3040444
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11166
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
diff --git a/Makefile.inc b/Makefile.inc
index 1f74bbe..7f5563a2 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -188,11 +188,13 @@
 
 #######################################################################
 # Add handler to compile ACPI's ASL
+# arg1: base file name
+# arg2: y or n for including in cbfs. defaults to y
 define asl_template
 $(call strip_quotes,$(CONFIG_CBFS_PREFIX))/$(1).aml-file = $(obj)/$(1).aml
 $(call strip_quotes,$(CONFIG_CBFS_PREFIX))/$(1).aml-type = raw
 $(call strip_quotes,$(CONFIG_CBFS_PREFIX))/$(1).aml-compression = none
-cbfs-files-y += $(call strip_quotes,$(CONFIG_CBFS_PREFIX))/$(1).aml
+cbfs-files-$(if $(2),$(2),y) += $(call strip_quotes,$(CONFIG_CBFS_PREFIX))/$(1).aml
 $(obj)/$(1).aml: $(src)/mainboard/$(MAINBOARDDIR)/$(1).asl $(obj)/config.h
 	@printf "    IASL       $$(subst $(top)/,,$$(@))\n"
 	$(CC_ramstage) -x assembler-with-cpp -E -MMD -MT $$(@) $$(CPPFLAGS_ramstage) -D__ACPI__ -P -include $(src)/include/kconfig.h -I$(obj) -I$(src) -I$(src)/include -I$(src)/arch/$(ARCHDIR-$(ARCH-ramstage-y))/include -I$(src)/mainboard/$(MAINBOARDDIR) $$< -o $$@