optee-test: add 3.20.0 version

https://github.com/OP-TEE/optee_test/releases/tag/3.20.0

Signed-off-by: Denys Dmytriyenko <denis@denix.org>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm/recipes-security/optee/optee-test_3.20.0.bb

@@ -0,0 +1,10 @@
+require optee-test.inc
+
+SRC_URI:append = " \
+    file://musl-workaround.patch \
+   "
+SRCREV = "5db8ab4c733d5b2f4afac3e9aef0a26634c4b444"
+
+EXTRA_OEMAKE:append:libc-musl = " OPTEE_OPENSSL_EXPORT=${STAGING_INCDIR}"
+DEPENDS:append:libc-musl = " openssl"
+CFLAGS:append:libc-musl = " -Wno-error=deprecated-declarations"