ARM: sunxi: Drop of_device.h include

Now that of_cpu_device_node_get() is defined in of.h, of_device.h is just
implicitly including other includes, and is no longer needed. Just drop
including of_device.h as of.h is already included.

Acked-by: Chen-Yu Tsai <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rob Herring <[e-mail]>

arch/arm/mach-sunxi/mc_smp.c

···
 #include <linux/irqchip/arm-gic.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/of_device.h>
 #include <linux/smp.h>
 
 #include <asm/cacheflush.h>