Sync tf_config files with internal CI

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: I064f4f252fe7d3770719dee040feb96ea180a9bb
diff --git a/tf_config/juno-aarch32-el3-runtime-mbedtls b/tf_config/juno-aarch32-el3-runtime-mbedtls
new file mode 100644
index 0000000..9e10f01
--- /dev/null
+++ b/tf_config/juno-aarch32-el3-runtime-mbedtls
@@ -0,0 +1,7 @@
+ARM_ROTPK_LOCATION=devel_rsa
+CROSS_COMPILE=aarch64-none-elf-
+GENERATE_COT=1
+JUNO_AARCH32_EL3_RUNTIME=1
+PLAT=juno
+ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem
+TRUSTED_BOARD_BOOT=1