USB: SisUSB2VGA: Mis-spelled word

Trivial fix
Signed-off-by: Felipe Balbi <felipe.lima@indt.org.br>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/misc/sisusbvga/sisusb.h

@@ -44,7 +44,7 @@
 #include <linux/mutex.h>
 
 /* For older kernels, support for text consoles is by default
- * off. To ensable text console support, change the following:
+ * off. To enable text console support, change the following:
  */
 /* #define CONFIG_USB_SISUSBVGA_CON */