xtest: add --install-tas argument

Adds --install-tas argument which will install all bootstrap TAs
(/lib/optee_armtz/*.bsta) in the OP-TEE TA database.

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/Android.mk b/Android.mk
index 0db5711..63aff75 100644
--- a/Android.mk
+++ b/Android.mk
@@ -49,6 +49,10 @@
 	xtest_main.c \
 	xtest_test.c
 
+ifeq ($(CFG_SECSTOR_TA_MGMT_PTA),y)
+srcs += install_ta.c
+endif
+
 ifeq ($(CFG_SECURE_DATA_PATH),y)
 srcs += sdp_basic.c
 endif