Remove ChromeOS specific configs from the U-Boot repository.

config.mk

Index: config.mk
diff --git a/config.mk b/config.mk
index dc26b7cd7e930a0fcb62882379190dc5250a9b4f..486a322de5534450020de1b1d28344d20275894d 100644
--- a/config.mk
+++ b/config.mk
@@ -46,6 +46,10 @@ PLATFORM_LDFLAGS =
 
 #########################################################################
 
+ifdef CROS_CONFIG_PATH
+HOSTCPPFLAGS += -I$(CROS_CONFIG_PATH)
+endif
+
 HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
 		  $(HOSTCPPFLAGS)
 HOSTSTRIP	= strip
@@ -185,6 +189,10 @@ 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)