add fruitjam sdfat pinout support

Author: hathach

examples/MassStorage/msc_external_flash_sdcard/msc_external_flash_sdcard.ino

@@ -61,6 +61,14 @@ Adafruit_SPIFlash flash(&flashTransport);
   #define SDCARD_DETECT        40
   #define SDCARD_DETECT_ACTIVE LOW
 
+#elif defined(ARDUINO_ADAFRUIT_FRUITJAM_RP2350)
+  #define SDIO_CLK_PIN  34
+  #define SDIO_CMD_PIN  35 // MOSI
+  #define SDIO_DAT0_PIN 36 // DAT1: 37, DAT2: 38, DAT3: 39
+
+  #define SDCARD_DETECT        33
+  #define SDCARD_DETECT_ACTIVE LOW
+
 #else
   // Use SPI, no detect
   #define SDCARD_CS       10

examples/MassStorage/msc_sdfat/msc_sdfat.ino

@@ -35,14 +35,21 @@
   #define SDCARD_DETECT_ACTIVE LOW
 
 #elif defined(ARDUINO_ADAFRUIT_METRO_RP2350)
-  // Note: not working yet (need troubleshoot later)
   #define SDIO_CLK_PIN  34
   #define SDIO_CMD_PIN  35 // MOSI
   #define SDIO_DAT0_PIN 36 // DAT1: 37, DAT2: 38, DAT3: 39
 
   #define SDCARD_DETECT        40
   #define SDCARD_DETECT_ACTIVE LOW
 
+#elif defined(ARDUINO_ADAFRUIT_FRUITJAM_RP2350)
+  #define SDIO_CLK_PIN  34
+  #define SDIO_CMD_PIN  35 // MOSI
+  #define SDIO_DAT0_PIN 36 // DAT1: 37, DAT2: 38, DAT3: 39
+
+  #define SDCARD_DETECT        33
+  #define SDCARD_DETECT_ACTIVE LOW
+
 #else
   // Use SPI, no detect
   #define SDCARD_CS       10