dts: arm: stm32h7 hsi clock requires hsi-div property

The compatible: "st,stm32h7-hsi-clock"  has HSI clock divider
required which is set to 1, by default, delevering 64MHz
in the stm32h7.dtsi and stm32h7rs.dtsi
(As done for stm32h5 and other series)

Signed-off-by: Francois Ramu <[email protected]>

Author: FRASTM

dts/arm/st/h7/stm32h7.dtsi

@@ -66,6 +66,7 @@
 		clk_hsi: clk-hsi {
 			#clock-cells = <0>;
 			compatible = "st,stm32h7-hsi-clock";
+			hsi-div = <1>;	/* HSI RC: 64MHz, hsi_clk = 64MHz */
 			clock-frequency = <DT_FREQ_M(64)>;
 			status = "disabled";
 		};

dts/arm/st/h7rs/stm32h7rs.dtsi

@@ -97,6 +97,7 @@
 		clk_hsi: clk-hsi {
 			#clock-cells = <0>;
 			compatible = "st,stm32h7-hsi-clock";
+			hsi-div = <1>;	/* HSI RC: 64MHz, hsi_clk = 64MHz */
 			clock-frequency = <DT_FREQ_M(64)>;
 			status = "disabled";
 		};