feat(st-ddr): add STM32MP2 driver

Add driver to support DDR on STM32MP2 platform. It drives the DDR PHY
and its firmware, as well as the DDR controller.

Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Change-Id: I93de2db1b9378d5654e76b3bf6f3407d80bc4ca5
diff --git a/plat/st/stm32mp2/stm32mp2_def.h b/plat/st/stm32mp2/stm32mp2_def.h
index 9838b55..73116db 100644
--- a/plat/st/stm32mp2/stm32mp2_def.h
+++ b/plat/st/stm32mp2/stm32mp2_def.h
@@ -153,6 +153,8 @@
 
 #if STM32MP_DDR_FIP_IO_STORAGE
 #define STM32MP_DDR_FW_BASE			SRAM1_BASE
+#define STM32MP_DDR_FW_DMEM_OFFSET		U(0x400)
+#define STM32MP_DDR_FW_IMEM_OFFSET		U(0x800)
 #define STM32MP_DDR_FW_MAX_SIZE			U(0x8800)
 #endif