tools: Remove CONFIG_SYS_TEXT_BASE in Makefile

This define is not used in tools sources and can be removed
to avoid unnecessary link between tools and defconfig

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/Makefile b/tools/Makefile
index 5000f4d..1c840d7 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -246,7 +246,6 @@
 		$(patsubst -I%,-idirafter%, $(filter -I%, $(UBOOTINCLUDE))) \
 		-I$(srctree)/lib/libfdt \
 		-I$(srctree)/tools \
-		-DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) \
 		-DUSE_HOSTCC \
 		-D__KERNEL_STRICT_NAMES \
 		-D_GNU_SOURCE