clk: imx6: Add definition for IMX6QDL_CLK_ENET clock

After commit 673f659732 ("net: fec_mxc: support i.MX8M with CLK_CCF") all
NXP boards, which are not IMX8 and in the same time are supporting CCF
need to provide IMX6QDL_CLK_ENET.

This change defines the missing clock in i.MX6Q's CCF.

Signed-off-by: Lukasz Majewski <lukma@denx.de>

drivers/clk/imx/clk-imx6q.c

@@ -183,6 +183,7 @@ static int imx6q_clk_probe(struct udevice *dev)
 	clk_dm(IMX6QDL_CLK_I2C2,
 	       imx_clk_gate2("i2c2", "ipg_per", base + 0x70, 8));
 
+	clk_dm(IMX6QDL_CLK_ENET, imx_clk_gate2("enet", "ipg", base + 0x6c, 10));
 	return 0;
 }