boot/nxboot/loader/boot.c: copy partition with blocksize large writes

The previous logic MAX(info_from.blocksize, info_where.blocksize) was
incorrect. The most effective access with by writing the entire
size of the block, therefore just decide the size based on the
target page size.

Signed-off-by: Michal Lenc <michallenc@seznam.cz>

Author: michallenc

boot/nxboot/loader/boot.c

@@ -164,7 +164,7 @@ static int copy_partition(int from, int where, struct nxboot_state *state,
 #ifdef CONFIG_NXBOOT_PRINTF_PROGRESS_PERCENT
   total_size = remain * 100;
 #endif
-  blocksize = MAX(info_from.blocksize, info_where.blocksize);
+  blocksize = info_where.blocksize;
 
   buf = malloc(blocksize);
   if (!buf)