freetz-ng: fix time of assignment for GNU_HOST_NAME variable

Makefile

@@ -279,6 +279,21 @@ export VERBOSE
 include $(INCLUDE_DIR)/Makefile/echo.mk
 include $(INCLUDE_DIR)/Makefile/macros.mk
 
+HOSTCC:=gcc
+HOST_ARCH:=$(shell $(HOSTCC) -dumpmachine | sed -e s'/-.*//' \
+	-e 's/sparc.*/sparc/' \
+	-e 's/arm.*/arm/g' \
+	-e 's/m68k.*/m68k/' \
+	-e 's/ppc/powerpc/g' \
+	-e 's/v850.*/v850/g' \
+	-e 's/sh[234]/sh/' \
+	-e 's/mips-.*/mips/' \
+	-e 's/mipsel-.*/mipsel/' \
+	-e 's/cris.*/cris/' \
+	-e 's/i[3-9]86/i386/' \
+	)
+GNU_HOST_NAME:=$(HOST_ARCH)-pc-linux-gnu
+
 include $(TOOLS_DIR)/make/Makefile.in
 include $(call sorted-wildcard,$(TOOLS_DIR)/make/*/*.mk)