all: changeover to eliminate all direct use of master/slave terminology

Signed-off-by: deadprogram <ron@hybridgroup.com>

examples/flash/console/spi/main.go

@@ -3,7 +3,7 @@ package main
 import (
 	"machine"
 
-	"tinygo.org/x/drivers/examples/flash/console"
+	console_example "tinygo.org/x/drivers/examples/flash/console"
 	"tinygo.org/x/drivers/flash"
 )
 
@@ -11,8 +11,8 @@ func main() {
 	console_example.RunFor(
 		flash.NewSPI(
 			&machine.SPI1,
-			machine.SPI1_MOSI_PIN,
-			machine.SPI1_MISO_PIN,
+			machine.SPI1_SDO_PIN,
+			machine.SPI1_SDI_PIN,
 			machine.SPI1_SCK_PIN,
 			machine.SPI1_CS_PIN,
 		),