[PATCH] spi-bfin: Add missing gpio.h include

[Steven Rostedt <rostedt@xxxxxxxxxxx>]

Running my ktest.pl tests on all the archs, I stumbled over this for
3.15-rc2:

drivers/spi/spi-bfin5xx.c: In function 'bfin_spi_cs_active':
drivers/spi/spi-bfin5xx.c:169:3: error: implicit declaration of function 'gpio_set_value' [-Werror=implicit-function-declaration]
drivers/spi/spi-bfin5xx.c: In function 'bfin_spi_setup':
drivers/spi/spi-bfin5xx.c:1097:4: error: implicit declaration of function 'gpio_request' [-Werror=implicit-function-declaration]
drivers/spi/spi-bfin5xx.c:1102:4: error: implicit declaration of function 'gpio_direction_output' [-Werror=implicit-function-declaration]
drivers/spi/spi-bfin5xx.c:1130:3: error: implicit declaration of function 'gpio_free' [-Werror=implicit-function-declaration]

The problem is that the spi-bfin5xx driver is missing an include for
the gpio.h file.

Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
index 55e57c3..da8baa5 100644
--- a/drivers/spi/spi-bfin5xx.c
+++ b/drivers/spi/spi-bfin5xx.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
+#include <linux/gpio.h>
 #include <linux/irq.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
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