HV: config: adapt to the generated config.h

This patch drops "#include <bsp_cfg.h>" and include the generated config.h in
CFLAGS for the configuration data.

Also make sure that all configuration data have the 'CONFIG_' prefix.

v4 -> v5:

    * No changes.

v3 -> v4:

    * Add '-include config.h' to hypervisor/bsp/uefi/efi/Makefile.
    * Update comments mentioning bsp_cfg.h.

v2 -> v3:

    * Include config.h on the command line instead of in any header or source to
      avoid including config.h multiple times.
    * Add config.h as an additional dependency for source compilation.

v1 -> v2:

    * No changes.

Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>

hypervisor/Makefile

@@ -77,6 +77,7 @@ INCLUDE_PATH += include/common
 INCLUDE_PATH += bsp/include
 INCLUDE_PATH += bsp/$(PLATFORM)/include/bsp
 INCLUDE_PATH += boot/include
+INCLUDE_PATH += $(HV_OBJDIR)/include
 
 CC ?= gcc
 AS ?= as
@@ -180,7 +181,7 @@ DISTCLEAN_OBJS := $(shell find $(BASEDIR) -name '*.o')
 VERSION := bsp/$(PLATFORM)/include/bsp/version.h
 
 .PHONY: all
-all: $(BUILD_DEPS) $(VERSION) $(HV_OBJDIR)/$(HV_FILE).32.out $(HV_OBJDIR)/$(HV_FILE).bin
+all: $(BUILD_DEPS) $(VERSION) oldconfig $(HV_OBJDIR)/$(HV_FILE).32.out $(HV_OBJDIR)/$(HV_FILE).bin
 	rm -f $(VERSION)
 
 ifeq ($(PLATFORM), uefi)
@@ -247,11 +248,10 @@ $(VERSION):
 	echo "#define HV_BUILD_TIME "\""$$TIME"\""" >> $(VERSION);\
 	echo "#define HV_BUILD_USER "\""$(USER)"\""" >> $(VERSION)
 
-$(HV_OBJDIR)/%.o: %.c
+$(HV_OBJDIR)/%.o: %.c $(HV_OBJDIR)/$(HV_CONFIG_H)
 	[ ! -e $@ ] && mkdir -p $(dir $@); \
 	$(CC) $(patsubst %, -I%, $(INCLUDE_PATH)) -I. -c $(CFLAGS) $(ARCH_CFLAGS) $< -o $@
 
-$(HV_OBJDIR)/%.o: %.S
+$(HV_OBJDIR)/%.o: %.S $(HV_OBJDIR)/$(HV_CONFIG_H)
 	[ ! -e $@ ] && mkdir -p $(dir $@); \
 	$(CC) $(patsubst %, -I%, $(INCLUDE_PATH)) -I. $(ASFLAGS) $(ARCH_ASFLAGS) -c $< -o $@
-