clock: Add KPP clock support for ccm.

Add KPP clock support for ccm.

Signed-off-by: Qiang Zhang <qiang.zhang_6@nxp.com>

Author: mcuxted

drivers/clock_control/clock_control_mcux_ccm_rev2.c

@@ -299,6 +299,12 @@ static int mcux_ccm_get_subsys_rate(const struct device *dev,
 		break;
 #endif
 
+#ifdef CONFIG_INPUT_MCUX_KPP
+	case IMX_CCM_KPP_CLK:
+		clock_root = kCLOCK_CpuClk;
+		break;
+#endif
+
 	default:
 		return -EINVAL;
 	}

include/zephyr/dt-bindings/clock/imx_ccm_rev2.h

@@ -155,6 +155,9 @@
 #define IMX_CCM_LPIT2_CLK 0x2301UL
 #define IMX_CCM_LPIT3_CLK 0x2302UL
 
+/* KPP */
+#define IMX_CCM_KPP_CLK                0x2400UL
+
 /* QTMR */
 #define IMX_CCM_QTMR_CLK               0x6000UL
 #define IMX_CCM_QTMR1_CLK              0x6000UL