[POWERPC] Merge dtc upstream source

# Makefile.dtc

#

# This is not a complete Makefile of itself.  Instead, it is designed to

# be easily embeddable into other systems of Makefiles.

#

DTC_SRCS = dtc.c flattree.c fstree.c data.c livetree.c treesource.c srcpos.c \

	checks.c

DTC_EXTRA = dtc.h srcpos.h

DTC_LEXFILES = dtc-lexer.l

DTC_BISONFILES = dtc-parser.y

DTC_LEX_SRCS = $(DTC_LEXFILES:%.l=%.lex.c)

DTC_BISON_SRCS = $(DTC_BISONFILES:%.y=%.tab.c)

DTC_BISON_INCLUDES = $(DTC_BISONFILES:%.y=%.tab.h)

DTC_GEN_SRCS = $(DTC_LEX_SRCS) $(DTC_BISON_SRCS)

DTC_GEN_ALL = $(DTC_GEN_SRCS) $(DTC_BISON_INCLUDES)

DTC_OBJS = $(DTC_SRCS:%.c=%.o) $(DTC_GEN_SRCS:%.c=%.o)

DTC_CLEANFILES = $(DTC_GEN_ALL)

# We assume the containing Makefile system can do auto-dependencies for most

# things, but we supply the dependencies on generated header files explicitly

$(addprefix $(DTC_objdir)/,$(DTC_GEN_SRCS:%.c=%.o)): $(addprefix $(DTC_objdir)/,$(DTC_BISON_INCLUDES))