Use the shortcut memory_region_init_ram_nomigrate as we have no flags
to pass and remove some extra line breaks to make the function occupy
less lines. Also shorten some other function prototypes.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
---
 system/memory.c | 30 ++++++++++--------------------
 1 file changed, 10 insertions(+), 20 deletions(-)

diff --git a/system/memory.c b/system/memory.c
index 68dc95b9b1..015b445ebf 100644
--- a/system/memory.c
+++ b/system/memory.c
@@ -1568,12 +1568,9 @@ static void memory_region_set_ops(MemoryRegion *mr,
     mr->terminates = true;
 }
 
-void memory_region_init_io(MemoryRegion *mr,
-                           Object *owner,
-                           const MemoryRegionOps *ops,
-                           void *opaque,
-                           const char *name,
-                           uint64_t size)
+void memory_region_init_io(MemoryRegion *mr, Object *owner,
+                           const MemoryRegionOps *ops, void *opaque,
+                           const char *name, uint64_t size)
 {
     memory_region_init(mr, owner, name, size);
     memory_region_set_ops(mr, ops, opaque);
@@ -1689,30 +1686,23 @@ void memory_region_init_ram_device_ptr(MemoryRegion *mr, Object *owner,
     mr->ram_device = true;
 }
 
-void memory_region_init_alias(MemoryRegion *mr,
-                              Object *owner,
-                              const char *name,
-                              MemoryRegion *orig,
-                              hwaddr offset,
-                              uint64_t size)
+void memory_region_init_alias(MemoryRegion *mr, Object *owner,
+                              const char *name, MemoryRegion *orig,
+                              hwaddr offset, uint64_t size)
 {
     memory_region_init(mr, owner, name, size);
     mr->alias = orig;
     mr->alias_offset = offset;
 }
 
-bool memory_region_init_rom_nomigrate(MemoryRegion *mr,
-                                      Object *owner,
-                                      const char *name,
-                                      uint64_t size,
+bool memory_region_init_rom_nomigrate(MemoryRegion *mr, Object *owner,
+                                      const char *name, uint64_t size,
                                       Error **errp)
 {
-    if (!memory_region_init_ram_flags_nomigrate(mr, owner, name,
-                                                size, 0, errp)) {
-         return false;
+    if (!memory_region_init_ram_nomigrate(mr, owner, name, size, errp)) {
+        return false;
     }
     mr->readonly = true;
-
     return true;
 }
 
-- 
2.41.3