staging: rtl8723bs: hal: spaces preferred around unary operator

This patch fixes below issues reported by checkpatch

CHECK: spaces preferred around that '-' (ctx:VxV)
CHECK: spaces preferred around that '/' (ctx:VxV)
Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/hal/rtl8723bs_xmit.c

@@ -284,7 +284,7 @@ static s32 xmit_xmitframes(struct adapter *padapter, struct xmit_priv *pxmitpriv
 				txlen = txdesc_size + rtw_wlan_pkt_size(pxmitframe);
 				if(	!pxmitbuf ||
 					((_RND(pxmitbuf->len, 8) + txlen) > max_xmit_len) ||
-					(k >= (rtw_hal_sdio_max_txoqt_free_space(padapter)-1))
+					(k >= (rtw_hal_sdio_max_txoqt_free_space(padapter) - 1))
 				) {
 					if (pxmitbuf) {
 						/* pxmitbuf->priv_data will be NULL, and will crash here */
@@ -355,8 +355,8 @@ static s32 xmit_xmitframes(struct adapter *padapter, struct xmit_priv *pxmitpriv
 					rtw_count_tx_stats(padapter, pxmitframe, pxmitframe->attrib.last_txcmdsz);
 
 					txlen = txdesc_size + pxmitframe->attrib.last_txcmdsz;
-					pxmitframe->pg_num = (txlen + 127)/128;
-					pxmitbuf->pg_num += (txlen + 127)/128;
+					pxmitframe->pg_num = (txlen + 127) / 128;
+					pxmitbuf->pg_num += (txlen + 127) / 128;
 				    /* if (k != 1) */
 					/* 	((struct xmit_frame*)pxmitbuf->priv_data)->pg_num += pxmitframe->pg_num; */
 					pxmitbuf->ptail += _RND(txlen, 8); /*  round to 8 bytes alignment */
@@ -522,7 +522,7 @@ s32 rtl8723bs_mgnt_xmit(
 	rtl8723b_update_txdesc(pmgntframe, pmgntframe->buf_addr);
 
 	pxmitbuf->len = txdesc_size + pattrib->last_txcmdsz;
-	pxmitbuf->pg_num = (pxmitbuf->len + 127)/128; /*  128 is tx page size */
+	pxmitbuf->pg_num = (pxmitbuf->len + 127) / 128; /*  128 is tx page size */
 	pxmitbuf->ptail = pmgntframe->buf_addr + pxmitbuf->len;
 	pxmitbuf->ff_hwaddr = rtw_get_ff_hwaddr(pmgntframe);