ARM: dts: stm32: add Fast Mode Plus info in I2C nodes of stm32mp151

Add the syscfg-fmp property in each i2c node in order to allow
Fast Mode Plus speed if clock-frequency >= 1MHz is indicated.
Signed-off-by: Alain Volmat <alain.volmat@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp151.dtsi

@@ -484,6 +484,7 @@ i2c1: i2c@40012000 {
 			resets = <&rcc I2C1_R>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			st,syscfg-fmp = <&syscfg 0x4 0x1>;
 			wakeup-source;
 			status = "disabled";
 		};
@@ -498,6 +499,7 @@ i2c2: i2c@40013000 {
 			resets = <&rcc I2C2_R>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			st,syscfg-fmp = <&syscfg 0x4 0x2>;
 			wakeup-source;
 			status = "disabled";
 		};
@@ -512,6 +514,7 @@ i2c3: i2c@40014000 {
 			resets = <&rcc I2C3_R>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			st,syscfg-fmp = <&syscfg 0x4 0x4>;
 			wakeup-source;
 			status = "disabled";
 		};
@@ -526,6 +529,7 @@ i2c5: i2c@40015000 {
 			resets = <&rcc I2C5_R>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			st,syscfg-fmp = <&syscfg 0x4 0x10>;
 			wakeup-source;
 			status = "disabled";
 		};
@@ -1495,6 +1499,7 @@ i2c4: i2c@5c002000 {
 			resets = <&rcc I2C4_R>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			st,syscfg-fmp = <&syscfg 0x4 0x8>;
 			wakeup-source;
 			status = "disabled";
 		};
@@ -1531,6 +1536,7 @@ i2c6: i2c@5c009000 {
 			resets = <&rcc I2C6_R>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			st,syscfg-fmp = <&syscfg 0x4 0x20>;
 			wakeup-source;
 			status = "disabled";
 		};