lpc4322_hic: make use of OS_CLOCK defined in yaml

Author: Adrian Negreanu

source/hic_hal/nxp/lpc4322/board_LPC43xx.c

@@ -24,8 +24,8 @@
 
 void sdk_init(void)
 {
-    /* Set core clock to 120MHz */
-    CGU_Init(120000000);
+    /* Set core clock */
+    CGU_Init(OS_CLOCK);
     /* Set up USB0 clock */
     /* Disable PLL first */
     CGU_EnableEntity(CGU_CLKSRC_PLL0, DISABLE);

source/hic_hal/nxp/lpc4322/lpc43xx_cgu.c

@@ -244,7 +244,7 @@ uint32_t	CGU_Init(uint32_t wantedFreq)
     // Setup PLL1 to 204MHz
     // 0. Select IRC as BASE_M4_CLK source
     CGU_EntityConnect(CGU_CLKSRC_IRC, CGU_BASE_M4);
-    SystemCoreClock = 120000000;
+    SystemCoreClock = OS_CLOCK;
     // 1. Enable the crystal oscillator
     CGU_SetXTALOSC(12000000);
     CGU_EnableEntity(CGU_CLKSRC_XTAL_OSC, ENABLE);