ARM: dts: stm32: use the correct clock source for CEC on stm32mp151

stable inclusion
from stable-v5.10.132
commit 35ce2c64e57e51be166f575330968b6b31298d6d
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5YS3T

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=35ce2c64e57e51be166f575330968b6b31298d6d

--------------------------------

[ Upstream commit 78ece8cc ]

The peripheral clock of CEC is not LSE but CEC.
Signed-off-by: NGabriel Fernandez <gabriel.fernandez@foss.st.com>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>

arch/arm/boot/dts/stm32mp151.dtsi

@@ -543,7 +543,7 @@
 			compatible = "st,stm32-cec";
 			reg = <0x40016000 0x400>;
 			interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&rcc CEC_K>, <&clk_lse>;
+			clocks = <&rcc CEC_K>, <&rcc CEC>;
 			clock-names = "cec", "hdmi-cec";
 			status = "disabled";
 		};