pixma: Added support for the following Canon scanners:
 - Canon imageRUNNER 1133A
 - Canon PIXMA TS5350i Series
 - Canon PIXMA G600
 - Canon PIXMA TS3500 Series
 - Canon PIXMA TR4600 Series
 - Canon PIXMA TR4700 Series
 - Canon PIXMA E4500 Series
 - Canon PIXUS XK500 Series
 - Canon PIXMA TS8530 Series
 - Canon PIXUS XK100 Series
 - Canon PIXMA TS7530 Series
 - Canon PIXMA TS7450i Series
 - Canon PIXMA GX6000 Series
 - Canon PIXMA GX7000 Series
 - Canon PIXMA TS5400 Series