Remove ChromeOS specific configs from the U-Boot repository.

config.mk

 #
 # (C) Copyright 2000-2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
 # project.
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
 # published by the Free Software Foundation; either version 2 of
@@ skipping 28 matching lines @@
 src :=
 endif
 
 # clean the slate ...
 PLATFORM_RELFLAGS =
 PLATFORM_CPPFLAGS =
 PLATFORM_LDFLAGS =
 
 #########################################################################
 
+ifdef CROS_CONFIG_PATH
+HOSTCPPFLAGS += -I$(CROS_CONFIG_PATH)
+endif
+
 HOSTCFLAGS      = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
                   $(HOSTCPPFLAGS)
 HOSTSTRIP       = strip
 
 #
 # Mac OS X / Darwin's C preprocessor is Apple specific.  It
 # generates numerous errors and warnings.  We want to bypass it
 # and use GNU C's cpp.  To do this we pass the -traditional-cpp
 # option to the compiler.  Note that the -traditional-cpp flag
 # DOES NOT have the same semantics as GNU C's flag, all it does
@@ skipping 119 matching lines @@
 CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
 endif
 
 ifdef VBOOT
 CPPFLAGS += -I$(VBOOT)/include/vboot
 endif
 ifdef VBOOT_DEBUG
 CPPFLAGS += -DVBOOT_DEBUG
 endif
 
+ifdef CROS_CONFIG_PATH
+CPPFLAGS += -I$(CROS_CONFIG_PATH)
+endif
+
 CPPFLAGS += -I$(TOPDIR)/include
 CPPFLAGS += -fno-builtin -ffreestanding -nostdinc       \
         -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
 
 ifdef BUILD_TAG
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
         -DBUILD_TAG='"$(BUILD_TAG)"'
 else
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
 endif
@@ skipping 61 matching lines @@
         $(CC)  $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
                 -o $@ $< -c
 $(obj)%.i:      %.c
         $(CPP) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
                 -o $@ $< -c
 $(obj)%.s:      %.c
         $(CC)  $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
                 -o $@ $< -c -S
 
 #########################################################################