drivers: mm: Fix vm region range check

Checking virtual range is incorrect because size + 1 addresses are
considered: size + starting address (that is also part of an
allocation). Hence the last address of the range is impossible to map

Signed-off-by: Wojciech Jablonski <wojciech.jablonski@intel.com>

Author: wjablon1

drivers/mm/mm_drv_common.c

@@ -38,7 +38,7 @@ int sys_mm_drv_map_region_safe(const struct sys_mm_drv_region *virtual_region,
 
 	/* check if memory to be mapped is within given virtual region */
 	if ((POINTER_TO_UINT(virt) >= virtual_region_start) &&
-	    (POINTER_TO_UINT(virt) + size < virtual_region_end)) {
+	    (POINTER_TO_UINT(virt) + size <= virtual_region_end)) {
 		return sys_mm_drv_map_region(virt, phys, size, flags);
 	}