Fix MKS SGEN-L Pins (#15153)

Marlin/src/pins/lpc1768/pins_MKS_SGEN_L.h

     #if ENABLED(FYSETC_MINI_12864)
       #define DOGLCD_CS    P0_18
       #define DOGLCD_A0    P0_16
-      #define DOGLCD_SCK   P0_7
+      #define DOGLCD_SCK   P0_07
       #define DOGLCD_MOSI  P1_20
       #define FORCE_SOFT_SPI
 
           #define RGB_LED_R_PIN P0_17
         #endif
         #ifndef RGB_LED_G_PIN
-          #define RGB_LED_G_PIN P1_0
+          #define RGB_LED_G_PIN P1_00
         #endif
         #ifndef RGB_LED_B_PIN
           #define RGB_LED_B_PIN P1_22
 
       #if ENABLED(MKS_MINI_12864)
         #define DOGLCD_CS  P0_17
-        #define DOGLCD_A0  P1_0
+        #define DOGLCD_A0  P1_00
       #endif
 
       #if ENABLED(ULTIPANEL)
         #define LCD_PINS_D5 P0_17
-        #define LCD_PINS_D6 P1_0
+        #define LCD_PINS_D6 P1_00
         #define LCD_PINS_D7 P1_22
       #endif