microblaze: Add {z,}alloc_maybe_bootmem functions

I will need {z,}alloc_maybe_bootmem functions for pci patches
Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/include/asm/system.h

@@ -87,6 +87,9 @@ void free_initmem(void);
 extern char *klimit;
 extern void ret_from_fork(void);
 
+extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
+extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
+
 #ifdef CONFIG_DEBUG_FS
 extern struct dentry *of_debugfs_root;
 #endif

arch/microblaze/mm/init.c

@@ -349,4 +349,27 @@ void __init *early_get_page(void)
 	}
 	return p;
 }
+
+void * __init_refok alloc_maybe_bootmem(size_t size, gfp_t mask)
+{
+	if (mem_init_done)
+		return kmalloc(size, mask);
+	else
+		return alloc_bootmem(size);
+}
+
+void * __init_refok zalloc_maybe_bootmem(size_t size, gfp_t mask)
+{
+	void *p;
+
+	if (mem_init_done)
+		p = kzalloc(size, mask);
+	else {
+		p = alloc_bootmem(size);
+		if (p)
+			memset(p, 0, size);
+	}
+	return p;
+}
+
 #endif /* CONFIG_MMU */