i.MX7ULP: Fix wrong i2c configuration name

Wrong I2c driver configuration name is used in codes, so I2c driver is
not built. Correct it.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/mx7ulp/clock.c b/arch/arm/mach-imx/mx7ulp/clock.c
index dc317fe..e333c78 100644
--- a/arch/arm/mach-imx/mx7ulp/clock.c
+++ b/arch/arm/mach-imx/mx7ulp/clock.c
@@ -72,7 +72,7 @@
 	return pcc_clock_get_rate(lpuart_pcc_clks[index - 4]);
 }
 
-#ifdef CONFIG_SYS_LPI2C_IMX
+#ifdef CONFIG_SYS_I2C_IMX_LPI2C
 int enable_i2c_clk(unsigned char enable, unsigned i2c_num)
 {
 	/* Set parent to FIRC DIV2 clock */