Extend suppress list for checkpatch and cppcheck

Checkpatch and cppcheck ignore the content of entire lib/ext folder.

Change-Id: Icb305df12063109e7342c0cf6744c4217f5275a4
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
diff --git a/cppcheck/tfm-suppress-list.txt b/cppcheck/tfm-suppress-list.txt
index a034c24..809e636 100644
--- a/cppcheck/tfm-suppress-list.txt
+++ b/cppcheck/tfm-suppress-list.txt
@@ -53,6 +53,6 @@
 missingInclude:*/tfm_secure_api.h:11
 
 //Exclude external qcbor code which does not comply with guidelines
-*:*/lib/ext/qcbor/*
+*:*/lib/ext/*
 *:*/bl2/ext/*
 *:*/platform/ext/*