Input: elan_i2c - handle firmware not implementing "get pattern" command

Not all versions of firmware implement "get pattern" command. When
encountering those assume that the controllers use older pattern.

Signed-off-by: Jingle Wu <jingle.wu@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
1 file changed