stm32mp1: clk: use the correct identifier for ethck

ETHCK_K is the identifier the kernel clock for ETH in kernel
binding, selected by ETHKSELR / gated by ETHCKEN = BIT(7).
U-Boot driver need to use the same identifier, so change ETHCK
to ETHCK_K.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
diff --git a/drivers/clk/clk_stm32mp1.c b/drivers/clk/clk_stm32mp1.c
index 4216341..f295e48 100644
--- a/drivers/clk/clk_stm32mp1.c
+++ b/drivers/clk/clk_stm32mp1.c
@@ -558,7 +558,7 @@
 
 	STM32MP1_CLK_SET_CLR(RCC_MP_AHB5ENSETR, 0, GPIOZ, _UNKNOWN_SEL),
 
-	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 7, ETHCK, _ETH_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 7, ETHCK_K, _ETH_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 8, ETHTX, _UNKNOWN_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 9, ETHRX, _UNKNOWN_SEL),
 	STM32MP1_CLK_SET_CLR_F(RCC_MP_AHB6ENSETR, 10, ETHMAC, _ACLK),