spi: uniphier: remove unnecessary include headers

This commit removed include headers of linux/of.h and linux/of_platform.h,
because they are not used.
Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-uniphier.c

@@ -10,8 +10,6 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>