addrmap: Support on sandbox

Update this feature so that it works on sandbox, using a basic identity
mapping. This allows us to run the 'ut addrmap' test.

Also fix up the test to use the correct macros to access the linker
list, so that the 'ut addrmap' command actually works.

Signed-off-by: Simon Glass <sjg@chromium.org>

lib/addr_map.c

@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <addr_map.h>
+#include <mapmem.h>
 
 struct addrmap address_map[CONFIG_SYS_NUM_ADDR_MAP];
 
@@ -18,7 +19,7 @@ phys_addr_t addrmap_virt_to_phys(void * vaddr)
 		if (address_map[i].size == 0)
 			continue;
 
-		addr = (u64)((u32)vaddr);
+		addr = map_to_sysmem(vaddr);
 		base = (u64)(address_map[i].vaddr);
 		upper = (u64)(address_map[i].size) + base - 1;
 
@@ -48,7 +49,7 @@ void *addrmap_phys_to_virt(phys_addr_t paddr)
 
 			offset = address_map[i].paddr - address_map[i].vaddr;
 
-			return (void *)(unsigned long)(paddr - offset);
+			return map_sysmem(paddr - offset, 0);
 		}
 	}