giga: fix SPI default CS

Author: facchinm

variants/GIGA/pins_arduino.h

@@ -172,7 +172,8 @@ static const uint8_t A13  = PIN_A13;
 #define PIN_SPI_MISO  (89u)
 #define PIN_SPI_MOSI  (90u)
 #define PIN_SPI_SCK   (91u)
-#define PIN_SPI_SS    (92u)
+// Same as SPI1 for backwards compatibility
+#define PIN_SPI_SS    (10u)
 
 #define PIN_SPI_MISO1  (12u)
 #define PIN_SPI_MOSI1  (11u)

variants/GIGA/variant.cpp

@@ -131,7 +131,9 @@ PinDescription g_APinDescription[] = {
   { PG_9,         NULL, NULL, NULL },    // D89  MISO
   { PD_7,         NULL, NULL, NULL },    // D90  MOSI
   { PB_3,         NULL, NULL, NULL },    // D91  SCK
-  { PA_15,        NULL, NULL, NULL },    // D92  CS
+
+  // USB HOST ENABLE
+  { PA_15,        NULL, NULL, NULL },    // D92  USB HOST ENABLE
 
   // CAN
   { PB_5,         NULL, NULL, NULL },    // D93  CAN RX