Makefile: refactor tools-all targets

- Move "easylogo", "gdb" tagets to tools/Makefile
 - Delete "gdbtools" target (same as "gdb")

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

Makefile

@@ -1092,16 +1092,14 @@ $(TIMESTAMP_FILE):
 		@LC_ALL=C date +'#define U_BOOT_TIME "%T"' >> $@.tmp
 		@cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@
 
-easylogo env gdb:
+env: depend scripts_basic
 	$(Q)$(MAKE) $(build)=tools/$@
 
-gdbtools: gdb
-
 xmldocs pdfdocs psdocs htmldocs mandocs: tools/kernel-doc/docproc
 	$(Q)$(MAKE) U_BOOT_VERSION=$(U_BOOT_VERSION) $(build)=doc/DocBook $@
 
-tools-all: easylogo env gdb $(VERSION_FILE) $(TIMESTAMP_FILE)
-	$(Q)$(MAKE) $(build)=tools HOST_TOOLS_ALL=y
+tools-all: HOST_TOOLS_ALL=y
+tools-all: env tools ;
 
 .PHONY : CHANGELOG
 CHANGELOG:

tools/Makefile

@@ -24,6 +24,9 @@ CONFIG_NETCONSOLE = y
 CONFIG_SHA1_CHECK_UB_IMG = y
 endif
 
+subdir-$(HOST_TOOLS_ALL) += easylogo
+subdir-$(HOST_TOOLS_ALL) += gdb
+
 # Merge all the different vars for envcrc into one
 ENVCRC-$(CONFIG_ENV_IS_EMBEDDED) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_DATAFLASH) = y
@@ -180,10 +183,13 @@ HOST_EXTRACFLAGS += -include $(SRCTREE)/include/libfdt_env.h \
 
 __build:	$(LOGO-y)
 
-subdir-y := kernel-doc
+subdir-y += kernel-doc
 
 $(LOGO_H):	$(obj)/bmp_logo $(LOGO_BMP)
 	$(obj)/bmp_logo --gen-info $(LOGO_BMP) > $@
 
 $(LOGO_DATA_H):	$(obj)/bmp_logo $(LOGO_BMP)
 	$(obj)/bmp_logo --gen-data $(LOGO_BMP) > $@
+
+# Let clean descend into subdirs
+subdir- += env