Updated clock configuration settings for NUCLEO_G474RE

Author: AGlass0fMilk

targets/targets.json

@@ -15017,7 +15017,7 @@
         "config": {
             "clock_source": {
                 "help": "Mask value : USE_PLL_HSE_EXTC | USE_PLL_HSE_XTAL (need HW patch) | USE_PLL_HSI",
-                "value": "USE_PLL_HSI",
+                "value": "USE_PLL_HSE_XTAL",
                 "macro_name": "CLOCK_SOURCE"
             },
             "lpticker_lptim": {
@@ -15026,7 +15026,7 @@
             },
             "hse_value": {
                 "help": "HSE default value is 25MHz in HAL",
-                "value": "8000000",
+                "value": "24000000",
                 "macro_name": "HSE_VALUE"
             }
         },