Sync Coverity scripts with internal CI

Sync the scripts with platform-ci commit:
539c151d0cd99a5e6ca6c0e6966f6d8579fe864e

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: I260c3490cc5079b66b735b03116af56501fa0642
diff --git a/script/tf-coverity/common-def.sh b/script/tf-coverity/common-def.sh
index 71640f2..746e9bc 100644
--- a/script/tf-coverity/common-def.sh
+++ b/script/tf-coverity/common-def.sh
@@ -5,11 +5,11 @@
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
-JENKINS_URL=http://ssg-sw.cambridge.arm.com/jenkins
+JENKINS_URL=https://jenkins.oss.arm.com/
 
 # mbed TLS source tag to checkout when building Trusted Firmware with Trusted
 # Board Boot support.
-MBED_TLS_SOURCES_TAG="mbedtls-2.16.0"
+MBED_TLS_SOURCES_TAG="mbedtls-2.18.0"
 
-ARMCLANG_PATH=
+ARMCLANG_PATH=/arm/warehouse/Distributions/FA/ARMCompiler/6.8/25/standalone-linux-x86_64-rel/bin/armclang
 CRYPTOCELL_LIB_PATH=/arm/projectscratch/ssg/trusted-fw/dummy-crypto-lib