poplar: rename FIP_ADD_IMG to TOOL_ADD_IMG

Fixes: f3d522b ("poplar: Support Trusted OS extra image (OP-TEE header) parsing")
Signed-off-by: Victor Chong <victor.chong@linaro.org>
diff --git a/plat/hisilicon/poplar/platform.mk b/plat/hisilicon/poplar/platform.mk
index 7c8027e..14ffa99 100644
--- a/plat/hisilicon/poplar/platform.mk
+++ b/plat/hisilicon/poplar/platform.mk
@@ -34,10 +34,10 @@
 # Add the build options to pack Trusted OS Extra1 and Trusted OS Extra2 images
 # in the FIP if the platform requires.
 ifneq ($(BL32_EXTRA1),)
-$(eval $(call FIP_ADD_IMG,BL32_EXTRA1,--tos-fw-extra1))
+$(eval $(call TOOL_ADD_IMG,BL32_EXTRA1,--tos-fw-extra1))
 endif
 ifneq ($(BL32_EXTRA2),)
-$(eval $(call FIP_ADD_IMG,BL32_EXTRA2,--tos-fw-extra2))
+$(eval $(call TOOL_ADD_IMG,BL32_EXTRA2,--tos-fw-extra2))
 endif
 
 NEED_BL33			:= yes