xilinx: removed microbalze_pic_init from xilinx.h

This is a microblaze target specific function that belongs outside
of xilinx.h (which is a collection of target independent device model
instantiator functions)

Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
diff --git a/hw/petalogix_s3adsp1800_mmu.c b/hw/petalogix_s3adsp1800_mmu.c
index 589e8ca..a43fb4c 100644
--- a/hw/petalogix_s3adsp1800_mmu.c
+++ b/hw/petalogix_s3adsp1800_mmu.c
@@ -36,6 +36,8 @@
 #include "elf.h"
 #include "blockdev.h"
 
+#include "microblaze_pic_cpu.h"
+
 #define LMB_BRAM_SIZE  (128 * 1024)
 #define FLASH_SIZE     (16 * 1024 * 1024)