stm32mp1: do not include platform header files directly in drivers

Instead, only platform_def.h is included.
The required files to be included are added in stm32mp1_def.h.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
diff --git a/drivers/st/mmc/stm32_sdmmc2.c b/drivers/st/mmc/stm32_sdmmc2.c
index 787241d..05f5ae1 100644
--- a/drivers/st/mmc/stm32_sdmmc2.c
+++ b/drivers/st/mmc/stm32_sdmmc2.c
@@ -8,6 +8,10 @@
 #include <errno.h>
 #include <string.h>
 
+#include <libfdt.h>
+
+#include <platform_def.h>
+
 #include <arch.h>
 #include <arch_helpers.h>
 #include <common/debug.h>
@@ -19,13 +23,10 @@
 #include <drivers/st/stm32mp1_reset.h>
 #include <dt-bindings/clock/stm32mp1-clks.h>
 #include <dt-bindings/reset/stm32mp1-resets.h>
-#include <libfdt.h>
 #include <lib/mmio.h>
 #include <lib/utils.h>
 #include <plat/common/platform.h>
 
-#include <stm32mp1_dt.h>
-
 /* Registers offsets */
 #define SDMMC_POWER			0x00U
 #define SDMMC_CLKCR			0x04U