toolchain/kernel-headers: sprinkle with some calls to MESSAGE

Thus, the failing step can be easily extracted by autobuilders,
to ease with post-mortem analysis.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

toolchain/kernel-headers/kernel-headers.mk

@@ -48,6 +48,7 @@ endif
 LINUX_HEADERS_DEPENDS:=
 
 $(LINUX_HEADERS_UNPACK_DIR)/.unpacked: $(DL_DIR)/$(LINUX_HEADERS_SOURCE)
+	$(Q)$(call MESSAGE,"Extracting kernel headers")
 	rm -rf $(LINUX_HEADERS_DIR)
 	$(INSTALL) -d $(@D)
 	$(LINUX_HEADERS_CAT) $(DL_DIR)/$(LINUX_HEADERS_SOURCE) | \
@@ -55,6 +56,7 @@ $(LINUX_HEADERS_UNPACK_DIR)/.unpacked: $(DL_DIR)/$(LINUX_HEADERS_SOURCE)
 	touch $@
 
 $(LINUX_HEADERS_UNPACK_DIR)/.patched: $(LINUX_HEADERS_UNPACK_DIR)/.unpacked $(LINUX_HEADERS_DEPENDS)
+	$(Q)$(call MESSAGE,"Patching kernel headers")
 	support/scripts/apply-patches.sh $(LINUX_HEADERS_UNPACK_DIR) toolchain/kernel-headers \
 		linux-$(LINUX_HEADERS_VERSION)-\*.patch{,.gz,.bz2}
 ifneq ($(KERNEL_HEADERS_PATCH_DIR),)
@@ -64,6 +66,7 @@ endif
 	touch $@
 
 $(LINUX_HEADERS_DIR)/.configured: $(LINUX_HEADERS_UNPACK_DIR)/.patched
+	$(Q)$(call MESSAGE,"Installing kernel headers")
 	(cd $(LINUX_HEADERS_UNPACK_DIR); \
 	 $(MAKE) ARCH=$(KERNEL_ARCH) \
 		HOSTCC="$(HOSTCC)" HOSTCFLAGS="$(HOSTCFLAGS)" \
@@ -76,6 +79,7 @@ $(DL_DIR)/$(LINUX_HEADERS_SOURCE):
 ifeq ($(BR2_KERNEL_HEADERS_SNAP),y)
 	$(error No local $@ found, cannot continue. Are you sure you wanted to enable BR2_KERNEL_HEADERS_SNAP?)
 endif
+	$(call MESSAGE,"Downloading kernel headers")
 	$(call DOWNLOAD,$(LINUX_HEADERS_SITE)/$(LINUX_HEADERS_SOURCE))
 
 kernel-headers: $(LINUX_HEADERS_DIR)/.configured