AT91: at91sam9261ek board: remove warnings related to use of SPI or SD/MMC

The sd/mmc data structure is not used if SPI is selected. The configuration
of PIO on the board prevent from using both interfaces at the same time
(board dependent).
Remove the warnings at compilation time adding a preprocessor condition.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/board-sam9261ek.c

@@ -168,17 +168,6 @@ static struct at91_udc_data __initdata ek_udc_data = {
 };
 
 
-/*
- * MCI (SD/MMC)
- */
-static struct at91_mmc_data __initdata ek_mmc_data = {
-	.wire4		= 1,
-//	.det_pin	= ... not connected
-//	.wp_pin		= ... not connected
-//	.vcc_pin	= ... not connected
-};
-
-
 /*
  * NAND flash
  */
@@ -247,6 +236,10 @@ static void __init ek_add_device_nand(void)
 	at91_add_device_nand(&ek_nand_data);
 }
 
+/*
+ * SPI related devices
+ */
+#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 
 /*
  * ADS7846 Touchscreen
@@ -357,6 +350,21 @@ static struct spi_board_info ek_spi_devices[] = {
 #endif
 };
 
+#else /* CONFIG_SPI_ATMEL_* */
+
+/*
+ * MCI (SD/MMC)
+ * spi0 and mmc/sd share the same PIO pins: cannot be used at the same time
+ */
+static struct at91_mmc_data __initdata ek_mmc_data = {
+	.wire4		= 1,
+//	.det_pin	= ... not connected
+//	.wp_pin		= ... not connected
+//	.vcc_pin	= ... not connected
+};
+
+#endif /* CONFIG_SPI_ATMEL_* */
+
 
 /*
  * LCD Controller