Documentation: Use "while" instead of "whilst"

Whilst making an unrelated change to some Documentation, Linus sayeth:

  | Afaik, even in Britain, "whilst" is unusual and considered more
  | formal, and "while" is the common word.
  |
  | [...]
  |
  | Can we just admit that we work with computers, and we don't need to
  | use þe eald Englisc spelling of words that most of the world never
  | uses?

dictionary.com refers to the word as "Chiefly British", which is
probably an undesirable attribute for technical documentation.

Replace all occurrences under Documentation/ with "while".

Cc: David Howells <dhowells@redhat.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michael Halcrow <mhalcrow@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/filesystems/qnx6.txt b/Documentation/filesystems/qnx6.txt
index 4f3d6a8..48ea68f 100644
--- a/Documentation/filesystems/qnx6.txt
+++ b/Documentation/filesystems/qnx6.txt
@@ -87,7 +87,7 @@
 For more than 16 blocks an indirect addressing in form of another tree is
 used. (scheme is the same as the one used for the superblock root nodes)
 
-The filesize is stored 64bit. Inode counting starts with 1. (whilst long
+The filesize is stored 64bit. Inode counting starts with 1. (while long
 filename inodes start with 0)
 
 Directories
@@ -155,7 +155,7 @@
 The requirement for a static, fixed preallocated system area comes from how
 qnx6fs deals with writes.
 Each superblock got it's own half of the system area. So superblock #1
-always uses blocks from the lower half whilst superblock #2 just writes to
+always uses blocks from the lower half while superblock #2 just writes to
 blocks represented by the upper half bitmap system area bits.
 
 Bitmap blocks, Inode blocks and indirect addressing blocks for those two