MIPS: ath79: add common SPI controller device

Several boards are using the built-in SPI controller of the
AR71XX/AR724X/AR913X SoCs. This patch adds common platform_device
and helper code to register it. Additionally, the patch registers
the SPI bus on the PB44 board.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1956/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile
index 344e9ab1e106..42f4295e650a 100644
--- a/arch/mips/ath79/Makefile
+++ b/arch/mips/ath79/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_EARLY_PRINTK)		+= early_printk.o
 obj-y                                   += dev-common.o
 obj-$(CONFIG_ATH79_DEV_GPIO_BUTTONS)    += dev-gpio-buttons.o
 obj-$(CONFIG_ATH79_DEV_LEDS_GPIO)       += dev-leds-gpio.o
+obj-$(CONFIG_ATH79_DEV_SPI)             += dev-spi.o
 
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