binman: Add support for TEE BL32

Add an entry for OP-TEE Trusted OS 'BL32' payload.
This is required by platforms using Cortex-A cores with TrustZone
technology.

Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add missing-blob-help, renumber the test file, update entry-docs:
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/Makefile b/Makefile
index 4b15224..697cc51 100644
--- a/Makefile
+++ b/Makefile
@@ -1327,6 +1327,7 @@
 		-I arch/$(ARCH)/dts -a of-list=$(CONFIG_OF_LIST) \
 		$(foreach f,$(BINMAN_INDIRS),-I $(f)) \
 		-a atf-bl31-path=${BL31} \
+		-a tee-os-path=${TEE} \
 		-a opensbi-path=${OPENSBI} \
 		-a default-dt=$(default_dt) \
 		-a scp-path=$(SCP) \