mtip32xx: Reduce the number of unaligned writes to 2

After several experiments, deduced the the optimal number of unaligned
writes to be 2. Changing the value accordingly.
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

drivers/block/mtip32xx/mtip32xx.h

@@ -53,7 +53,7 @@
 #define MTIP_FTL_REBUILD_TIMEOUT_MS	2400000
 
 /* unaligned IO handling */
-#define MTIP_MAX_UNALIGNED_SLOTS	8
+#define MTIP_MAX_UNALIGNED_SLOTS	2
 
 /* Macro to extract the tag bit number from a tag value. */
 #define MTIP_TAG_BIT(tag)	(tag & 0x1F)