stm32mp1: ram: change ddr speed to kHz

Allow fractional support in DDR tools.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/drivers/ram/stm32mp1/stm32mp1_ddr.h b/drivers/ram/stm32mp1/stm32mp1_ddr.h
index 3cd0161..a8eed89 100644
--- a/drivers/ram/stm32mp1/stm32mp1_ddr.h
+++ b/drivers/ram/stm32mp1/stm32mp1_ddr.h
@@ -157,7 +157,7 @@
 
 struct stm32mp1_ddr_info {
 	const char *name;
-	u16 speed; /* in MHZ */
+	u32 speed; /* in kHZ */
 	u32 size;  /* memory size in byte = col * row * width */
 };
 
@@ -172,7 +172,7 @@
 	struct stm32mp1_ddrphy_cal p_cal;
 };
 
-int stm32mp1_ddr_clk_enable(struct ddr_info *priv, u16 mem_speed);
+int stm32mp1_ddr_clk_enable(struct ddr_info *priv, u32 mem_speed);
 void stm32mp1_ddrphy_init(struct stm32mp1_ddrphy *phy, u32 pir);
 void stm32mp1_refresh_disable(struct stm32mp1_ddrctl *ctl);
 void stm32mp1_refresh_restore(struct stm32mp1_ddrctl *ctl,