Checkpatch: Ignore interface/include paths

The headers in interface/include/mbedtls and interface/include/psa
are not in full control of the TF-M project so do not run any style
check on them.

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: Ia4c95273149a0069f920749cc81a129db00f59ce
diff --git a/run-checkpatch.sh b/run-checkpatch.sh
index 5a8d247..369ab95 100755
--- a/run-checkpatch.sh
+++ b/run-checkpatch.sh
@@ -24,7 +24,7 @@
 ##
 #This is needed for Doxygen for now.
 #!string SKIP_PATHS;
-SKIP_PATHS='./build-\*:./platform/\*:*/tz_\*:./lib/\*:./platform/ext/\*:./bl2/ext/\*:./docs/\*:./tools/\*'
+SKIP_PATHS='./build-\*:./platform/\*:*/tz_\*:./lib/\*:./platform/ext/\*:./bl2/ext/\*:./docs/\*:./tools/\*:./interface/include/mbedtls/\*:./interface/include/psa/\*'
 
 ##@var TFM_DIRECTORY_NAME
 ##@brief Default path to tf-m source code.