up_addregion should use kmm_addregion; move garbage kmm*.c file to mm/. for now

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5721 42af7a65-404d-4744-a932-0658087f49c3

mm/Kconfig

@@ -37,7 +37,7 @@ config MM_REGIONS
 		If the architecture includes multiple, non-contiguous regions of
 		memory to allocate from, this specifies the number of memory regions
 		that the memory manager must handle and enables the API
-		mm_addregion(start, end);
+		mm_addregion(heap, start, end);
 
 		NOTE: If MM_MULTIHEAP is selected, then this maximum number of regions
 		applies to all heaps.