Indent the define statement by two spaces

follow the code style convention

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

mm/mm_heap/mm.h

@@ -127,9 +127,9 @@
 #define MM_PREVFREE_BIT  0x2
 #define MM_MASK_BIT      (MM_ALLOC_BIT | MM_PREVFREE_BIT)
 #ifdef CONFIG_MM_SMALL
-# define MMSIZE_MAX      UINT16_MAX
+#  define MMSIZE_MAX     UINT16_MAX
 #else
-# define MMSIZE_MAX      UINT32_MAX
+#  define MMSIZE_MAX     UINT32_MAX
 #endif
 
 /* What is the size of the allocnode? */

mm/mm_heap/mm_foreach.c

@@ -52,7 +52,7 @@ void mm_foreach(FAR struct mm_heap_s *heap, mm_node_handler_t handler,
 #if CONFIG_MM_REGIONS > 1
   int region;
 #else
-# define region 0
+#  define region 0
 #endif
 
   DEBUGASSERT(handler);

mm/mm_heap/mm_initialize.c

@@ -117,7 +117,7 @@ void mm_addregion(FAR struct mm_heap_s *heap, FAR void *heapstart,
     }
 
 #else
-# define IDX 0
+#  define IDX 0
 #endif
 
 #if defined(CONFIG_MM_SMALL) && !defined(CONFIG_SMALL_MEMORY)

mm/mm_heap/mm_mallinfo.c

@@ -120,7 +120,7 @@ int mm_mallinfo(FAR struct mm_heap_s *heap, FAR struct mallinfo *info)
 #if CONFIG_MM_REGIONS > 1
   int region = heap->mm_nregions;
 #else
-# define region 1
+#  define region 1
 #endif
 
   DEBUGASSERT(info);

mm/tlsf/mm_tlsf.c

@@ -479,7 +479,7 @@ void mm_addregion(FAR struct mm_heap_s *heap, FAR void *heapstart,
     }
 
 #else
-# define idx 0
+#  define idx 0
 #endif
 
   /* Register to KASan for access check */
@@ -575,7 +575,7 @@ void mm_checkcorruption(FAR struct mm_heap_s *heap)
 #if CONFIG_MM_REGIONS > 1
   int region;
 #else
-# define region 0
+#  define region 0
 #endif
 
   /* Visit each region */
@@ -849,7 +849,7 @@ int mm_mallinfo(FAR struct mm_heap_s *heap, FAR struct mallinfo *info)
 #if CONFIG_MM_REGIONS > 1
   int region;
 #else
-# define region 0
+#  define region 0
 #endif
 
   DEBUGASSERT(info);
@@ -926,7 +926,7 @@ void mm_memdump(FAR struct mm_heap_s *heap, pid_t pid)
 #if CONFIG_MM_REGIONS > 1
   int region;
 #else
-# define region 0
+#  define region 0
 #endif
   struct mallinfo_task info;