spi: spidev: Fix checkpatch issue

Fix the following checkpatch warnings.

  WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
  WARNING: braces {} are not necessary for any arm of this statement
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

drivers/spi/spidev.c

@@ -37,7 +37,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/spidev.h>
 
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 
 /*
@@ -206,9 +206,9 @@ spidev_write(struct file *filp, const char __user *buf,
 
 	mutex_lock(&spidev->buf_lock);
 	missing = copy_from_user(spidev->buffer, buf, count);
-	if (missing == 0) {
+	if (missing == 0)
 		status = spidev_sync_write(spidev, count);
-	} else
+	else
 		status = -EFAULT;
 	mutex_unlock(&spidev->buf_lock);