microblaze: remove unnecessary prom.h includes

In preparation to remove prom.h, remove unnecessary prom.h includes.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/microblaze/include/asm/cpuinfo.h

@@ -13,7 +13,7 @@
 #ifndef _ASM_MICROBLAZE_CPUINFO_H
 #define _ASM_MICROBLAZE_CPUINFO_H
 
-#include <asm/prom.h>
+#include <linux/of.h>
 
 /* CPU Version and FPGA Family code conversion table type */
 struct cpu_ver_key {

arch/microblaze/include/asm/pci.h

@@ -19,7 +19,6 @@
 #include <linux/scatterlist.h>
 
 #include <asm/io.h>
-#include <asm/prom.h>
 #include <asm/pci-bridge.h>
 
 #define PCIBIOS_MIN_IO		0x1000

arch/microblaze/kernel/platform.c

@@ -12,7 +12,6 @@
 
 #include <linux/init.h>
 #include <linux/of_platform.h>
-#include <asm/prom.h>
 #include <asm/setup.h>
 
 static struct of_device_id xilinx_of_bus_ids[] __initdata = {

arch/microblaze/pci/indirect_pci.c

@@ -16,7 +16,6 @@
 #include <linux/init.h>
 
 #include <linux/io.h>
-#include <asm/prom.h>
 #include <asm/pci-bridge.h>
 
 static int