tqma6: fix rounding in env

need to add before div in mmc update scripts. Otherwise we could
write one block more ba acident

Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
diff --git a/include/configs/tqma6.h b/include/configs/tqma6.h
index 311221d..9225bc1 100644
--- a/include/configs/tqma6.h
+++ b/include/configs/tqma6.h
@@ -133,8 +133,8 @@
 	"update_uboot=if tftp ${uboot}; then "                                 \
 		"if itest ${filesize} > 0; then "                              \
 			"mmc dev ${mmcdev}; mmc rescan; "                      \
-			"setexpr blkc ${filesize} / 0x200; "                   \
-			"setexpr blkc ${blkc} + 1; "                           \
+			"setexpr blkc ${filesize} + 0x1ff; "                   \
+			"setexpr blkc ${blkc} / 0x200; "                       \
 			"if itest ${blkc} <= ${uboot_size}; then "             \
 				"mmc write ${loadaddr} ${uboot_start} "        \
 					"${blkc}; "                            \
@@ -145,8 +145,8 @@
 		"if tftp ${kernel}; then "                                     \
 			"if itest ${filesize} > 0; then "                      \
 				"mmc dev ${mmcdev}; mmc rescan; "              \
-				"setexpr blkc ${filesize} / 0x200; "           \
-				"setexpr blkc ${blkc} + 1; "                   \
+				"setexpr blkc ${filesize} + 0x1ff; "           \
+				"setexpr blkc ${blkc} / 0x200; "               \
 				"if itest ${blkc} <= ${kernel_size}; then "    \
 					"mmc write ${loadaddr} "               \
 						"${kernel_start} ${blkc}; "    \
@@ -157,8 +157,8 @@
 	"update_fdt=if tftp ${fdt_file}; then "                                \
 		"if itest ${filesize} > 0; then "                              \
 			"mmc dev ${mmcdev}; mmc rescan; "                      \
-			"setexpr blkc ${filesize} / 0x200; "                   \
-			"setexpr blkc ${blkc} + 1; "                           \
+			"setexpr blkc ${filesize} + 0x1ff; "                   \
+			"setexpr blkc ${blkc} / 0x200; "                       \
 			"if itest ${blkc} <= ${fdt_size}; then "               \
 				"mmc write ${loadaddr} ${fdt_start} ${blkc}; " \
 			"fi; "                                                 \