switch arm 32 bit arch from armv5tel to armv6l

we have no supported armv5tel board left so we can switch to the higher
arch. This now can use the vpu (still in softfp calling convention to
not break existing installations.)
this fix many compile problems, also boost is now working again.

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>

lfs/u-boot

@@ -31,7 +31,7 @@ DL_FILE    = $(THISAPP).tar.bz2
 DL_FROM    = $(URL_IPFIRE)
 DIR_APP    = $(DIR_SRC)/$(THISAPP)
 TARGET     = $(DIR_INFO)/$(THISAPP)-$(MKIMAGE)
-SUP_ARCH   = armv5tel aarch64
+SUP_ARCH   = armv6l aarch64
 
 CFLAGS    += -fcommon
 
@@ -78,7 +78,7 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar axf $(DIR_DL)/$(DL_FILE)
 
 ifneq "$(MKIMAGE)" "1"
-ifeq "${BUILD_ARCH}" "armv5tel"
+ifeq "${BUILD_ARCH}" "armv6l"
 	# Pandaboard
 	-mkdir -pv /usr/share/u-boot/pandaboard
 	cd $(DIR_APP) && make CROSS_COMPILE="" omap4_panda_config
@@ -191,7 +191,7 @@ endif
 
 else
 	# mkimage
-ifeq "${BUILD_ARCH}" "armv5tel"
+ifeq "${BUILD_ARCH}" "armv6l"
 	cd $(DIR_APP) && make CROSS_COMPILE="" omap4_panda_config
 else
 	cd $(DIR_APP) && make CROSS_COMPILE="" rpi_3_config