Input: wacom - update Graphire4 and old Bamboo tablet buttons
Input: wacom - update Graphire4 and old Bamboo tablet buttons

Bamboo touch sets BTN_BACK, BTN_FORWARD, BTN_LEFT, and BTN_RIGHT
as the default button events for tablet buttons. Change Graphire4
and old Bamboo to the same settings.

Signed-off-by: Ping Cheng <dfb2633e349554895e5b55840b256039b90d8931@wacom.com>
Reviewed-by: Chris Bagwell <711c73f64afdce07b7e38039a96d2224209e9a6c@cnpbagwell.com>
Reviewed-by: Henrik Rydberg <b7088a9c70345a9ab94cacab3cc3888d0a7dc884@euromail.se>
Signed-off-by: Dmitry Torokhov <10a8c465cefc9bdd6c925e26964d23c90f1141cc@mail.ru>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas