Standardize Marlin SPI (part 1) (#19989)

Marlin/src/HAL/LPC1768/include/SPI.h

@@ -126,6 +126,11 @@ public:
    */
   SPIClass(uint8_t spiPortNumber);
 
+  /**
+   * Init using pins
+   */
+  SPIClass(pin_t mosi, pin_t miso, pin_t sclk, pin_t ssel = (pin_t)-1);
+
   /**
    * Select and configure the current selected SPI device to use
    */