Add IPC backend test groups

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: Iae9aed0971c791be804c49004b13bc12f0b5df65
diff --git a/tf-m-release.yaml b/tf-m-release.yaml
index 415e9c8..17d0cfc 100644
--- a/tf-m-release.yaml
+++ b/tf-m-release.yaml
@@ -23,7 +23,7 @@
           name: 'FILTER_GROUP'
           default: "release_test release_profile_s release_profile_m release_profile_m_arotless \
                     release_profile_l release_cc_driver_psa release_fp release_psa_api \
-                    release_nsce release_mmio release_an547 release_an552 \
+                    release_ipc_backend release_nsce release_mmio release_an547 release_an552 \
                     release_corstone310 release_rss release_psoc64 \
                     release_stm32l562e_dk release_lpcxpresso55s69"
           description: |