Bluetooth: btmrvl: Use DIV_ROUND_UP macro

The kernel.h macro DIV_ROUND_UP performs the computation
(((n) + (d) - 1) / (d))

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

drivers/bluetooth/btmrvl_sdio.c

@@ -514,7 +514,7 @@ static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
 	}
 
 	blksz = SDIO_BLOCK_SIZE;
-	num_blocks = (buf_len + blksz - 1) / blksz;
+	num_blocks = DIV_ROUND_UP(buf_len, blksz);
 
 	if (buf_len <= SDIO_HEADER_LEN
 	    || (num_blocks * blksz) > ALLOC_BUF_SIZE) {