board/nano-rp2040: define NINA_SPI and fix wifinina pins

src/machine/board_nano-rp2040.go

@@ -68,6 +68,10 @@ const (
 	SPI1_SDI_PIN Pin = GPIO22
 )
 
+var (
+	NINA_SPI = SPI1
+)
+
 // NINA-W102 Pins
 const (
 	NINA_SCK Pin = GPIO14
@@ -76,7 +80,7 @@ const (
 
 	NINA_CS     Pin = GPIO9
 	NINA_ACK    Pin = GPIO10
-	NINA_GPIO0  Pin = GPIO0
+	NINA_GPIO0  Pin = GPIO2
 	NINA_RESETN Pin = GPIO3
 
 	NINA_TX Pin = GPIO9