u-boot-boundary-fw-utils: Reuse the same override HOSTCC patch as u-boot-mkimage

(From OE-Core rev: 2815f819c1a620949213fa952557c03f7d594ed6)

Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

recipes-bsp/u-boot/u-boot-boundary-fw-utils/default-gcc.patch

@@ -0,0 +1,39 @@
+OE needs to be able to change the default compiler. If we pass in HOSTCC
+through the make command, it overwrites not only this setting but also the 
+setting in tools/Makefile wrapped in ifneq ($(CROSS_BUILD_TOOLS),) which 
+breaks the build.
+
+We therefore use override to ensure the value of HOSTCC is overwritten when
+needed.
+
+RP: Updated the patch to the version being submitted to upstream u-boot
+
+Upstream-Status: Submitted [emailed to Masahiro Yamada for discussion]
+RP 2017/3/11
+
+Index: git/tools/Makefile
+===================================================================
+--- git.orig/tools/Makefile
++++ git/tools/Makefile
+@@ -262,7 +262,7 @@ $(LICENSE_H): $(obj)/bin2header $(srctre
+ subdir- += env
+ 
+ ifneq ($(CROSS_BUILD_TOOLS),)
+-HOSTCC = $(CC)
++override HOSTCC = $(CC)
+ 
+ quiet_cmd_crosstools_strip = STRIP   $^
+       cmd_crosstools_strip = $(STRIP) $^; touch $@
+Index: git/tools/env/Makefile
+===================================================================
+--- git.orig/tools/env/Makefile
++++ git/tools/env/Makefile
+@@ -8,7 +8,7 @@
+ # fw_printenv is supposed to run on the target system, which means it should be
+ # built with cross tools. Although it may look weird, we only replace "HOSTCC"
+ # with "CC" here for the maximum code reuse of scripts/Makefile.host.
+-HOSTCC = $(CC)
++override HOSTCC = $(CC)
+ 
+ # Compile for a hosted environment on the target
+ HOST_EXTRACFLAGS  = $(patsubst -I%,-idirafter%, $(filter -I%, $(UBOOTINCLUDE))) \

recipes-bsp/u-boot/u-boot-boundary-fw-utils_2016.03.bb

@@ -3,7 +3,10 @@ require u-boot-boundary-common_${PV}.inc
 SUMMARY = "U-Boot bootloader fw_printenv/setenv utilities"
 DEPENDS = "mtd-utils"
 
-SRC_URI += "file://fw_env.config"
+SRC_URI += " \
+   file://default-gcc.patch \
+   file://fw_env.config \
+"
 
 INSANE_SKIP_${PN} = "already-stripped"
 EXTRA_OEMAKE_class-target = 'CROSS_COMPILE=${TARGET_PREFIX} CC="${CC} ${CFLAGS} ${LDFLAGS}" HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" V=1'