fdt_resize(): fix actualsize calculations with unaligned blobs

The code in fdt_resize() to extend the fdt size to end on a page boundary
is wrong for fdt's not located at an address aligned on a page boundary.
What's even worse, the code would make actualsize shrink rather than grow
if (blob & 0xfff) was bigger than the amount of padding added by ALIGN(),
causing fdt_add_mem_rsv to fail.

Fix it by aligning end address (blob + size) to a page boundary instead.
For aligned fdt's this is equivalent to what we had before.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

common/fdt_support.c

@@ -610,7 +610,7 @@ int fdt_resize(void *blob)
 		fdt_size_dt_strings(blob) + sizeof(struct fdt_reserve_entry);
 
 	/* Make it so the fdt ends on a page boundary */
-	actualsize = ALIGN(actualsize, 0x1000);
+	actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000);
 	actualsize = actualsize - ((uint)blob & 0xfff);
 
 	/* Change the fdt header to reflect the correct size */