stm32mp1: define STM32MP157C-DHCOM-PDK2

Signed-off-by: Johann Neuhauser <jneuhauser@dh-electronics.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
diff --git a/stm32mp1.mk b/stm32mp1.mk
index e947e84..0599cfe 100644
--- a/stm32mp1.mk
+++ b/stm32mp1.mk
@@ -20,6 +20,10 @@
 BREXT_FLAVOR		= STM32MP157A-DHCOR-AVENGER96
 STM32MP1_DTS_BASENAME	= stm32mp157a-dhcor-avenger96
 STM32MP1_DTS_U_BOOT		= stm32mp15xx-dhcor-avenger96
+else ifeq ($(PLATFORM),stm32mp1-157C_DHCOM_PDK2)
+BREXT_FLAVOR		= STM32MP157C-DHCOM-PDK2
+STM32MP1_DTS_BASENAME	= stm32mp157c-dhcom-pdk2
+STM32MP1_DTS_U_BOOT		= stm32mp15xx-dhcom-pdk2
 else ifeq ($(PLATFORM),stm32mp1-157C_DK2)
 BREXT_FLAVOR		= STM32MP157C-DK2
 STM32MP1_DTS_BASENAME	= stm32mp157c-dk2