scripts/spelling.txt: add "varible" pattern and fix typo instances

Fix typos and add the following to the scripts/spelling.txt:

  varible||variable

While we are here, tidy up the comment blocks that fit in a single line
for drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c and
net/sctp/transport.c.

Link: http://lkml.kernel.org/r/1481573103-11329-11-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/scsi/ChangeLog.megaraid_sas

@@ -549,7 +549,7 @@ ii.	Reduced by 1 max cmds sent to FW from Driver to make the reply_q_sz same
 3 Older Version   : 00.00.03.02
 
 i.	Send stop adapter to FW & Dump pending FW cmds before declaring adapter dead.
-	New varible added to set dbg level.
+	New variable added to set dbg level.
 ii.	Disable interrupt made as fn pointer as they are different for 1068 / 1078
 iii.	Frame count optimization. Main frame can contain 2 SGE for 64 bit SGLs and
 	3 SGE for 32 bit SGL

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

@@ -847,9 +847,7 @@ static void i40e_free_vf_res(struct i40e_vf *vf)
 		wr32(hw, reg_idx, reg);
 		i40e_flush(hw);
 	}
-	/* reset some of the state varibles keeping
-	 * track of the resources
-	 */
+	/* reset some of the state variables keeping track of the resources */
 	vf->num_queue_pairs = 0;
 	vf->vf_states = 0;
 	clear_bit(I40E_VF_STAT_INIT, &vf->vf_states);

drivers/net/wimax/i2400m/usb-fw.c

@@ -237,7 +237,7 @@ void __i2400mu_bm_notif_cb(struct urb *urb)
  *
  * @i2400m: device descriptor
  * @urb: urb to use
- * @completion: completion varible to complete when done
+ * @completion: completion variable to complete when done
  *
  * Data is always read to i2400m->bm_ack_buf
  */

kernel/torture.c

@@ -311,7 +311,7 @@ EXPORT_SYMBOL_GPL(torture_random);
 /*
  * Variables for shuffling.  The idea is to ensure that each CPU stays
  * idle for an extended period to test interactions with dyntick idle,
- * as well as interactions with any per-CPU varibles.
+ * as well as interactions with any per-CPU variables.
  */
 struct shuffle_task {
 	struct list_head st_l;

net/sctp/transport.c

@@ -643,9 +643,7 @@ void sctp_transport_reset(struct sctp_transport *t)
 	t->srtt = 0;
 	t->rttvar = 0;
 
-	/* Reset these additional varibles so that we have a clean
-	 * slate.
-	 */
+	/* Reset these additional variables so that we have a clean slate. */
 	t->partial_bytes_acked = 0;
 	t->flight_size = 0;
 	t->error_count = 0;

scripts/spelling.txt

@@ -1092,6 +1092,7 @@ vaid||valid
 vaild||valid
 valide||valid
 variantions||variations
+varible||variable
 varient||variant
 vaule||value
 verbse||verbose