fw/spi.c (spi_init): raise SPI speed from fosc/4 to fosc/2

fw/spi.c

@@ -26,11 +26,11 @@
 
 void spi_init(void)
 {
-	/* SPI mode 0, MSB first, fosc/4 */
+	/* SPI mode 0, MSB first, fosc/2 */
 	SPCR =
 	    1 << SPE |	/* enable SPI */
 	    1 << MSTR;	/* master */
-//	SPSR = 1 << SPI2X; /* enable for fosc/2 */
+	SPSR = 1 << SPI2X; /* enable for fosc/2 */
 }