mtd/nand/ubi: assortment of alignment fixes

Various U-Boot adoptions/extensions to MTD/NAND/UBI did not take buffer
alignment into account which led to failures of the following form:

ERROR: v7_dcache_inval_range - start address is not aligned - 0x1f7f0108
ERROR: v7_dcache_inval_range - stop address is not aligned - 0x1f7f1108

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Scott Wood <scottwood@freescale.com>
[trini: Add __UBOOT__ hunk to lib/zlib/zutil.c due to malloc.h in common.h]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/lib/zlib/zutil.c b/lib/zlib/zutil.c
index 14f6eb1..173a81d 100644
--- a/lib/zlib/zutil.c
+++ b/lib/zlib/zutil.c
@@ -43,11 +43,13 @@
  */
 #ifndef MY_ZCALLOC /* Any system without a special alloc function */
 
+#ifndef __UBOOT__
 #ifndef STDC
 extern voidp    malloc OF((uInt size));
 extern voidp    calloc OF((uInt items, uInt size));
 extern void     free   OF((voidpf ptr));
 #endif
+#endif
 
 voidpf zcalloc(voidpf opaque, unsigned items, unsigned size)
 {