Build: Add Diphda build group

Add Diphda build config: DIPHDA_GNUARM_PSA_1_Debug_BL2

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I6d5c6bb8ed88e361ab35bac2a74ead6e9cdf1875
diff --git a/tfm_ci_pylib/tfm_build_manager.py b/tfm_ci_pylib/tfm_build_manager.py
index b450a89..4516f90 100644
--- a/tfm_ci_pylib/tfm_build_manager.py
+++ b/tfm_ci_pylib/tfm_build_manager.py
@@ -40,7 +40,8 @@
                "arm/musca_b1/sse_200":          "MUSCA_B1",
                "arm/musca_b1/secure_enclave":   "MUSCA_B1_SE",
                "arm/musca_s1":                  "MUSCA_S1",
-               "stm/stm32l562e_dk":             "stm32l562e_dk"}
+               "stm/stm32l562e_dk":             "stm32l562e_dk",
+               "arm/diphda":                    "DIPHDA"}
 
 mapCompiler = {"toolchain_GNUARM.cmake":   "GNUARM",
                "toolchain_ARMCLANG.cmake": "ARMCLANG"}