sensor: Use common device name for G-sensor device driver

Use same name as name of input device on G-sensor driver kxtj9 and lis3dh
that HAL layer library can use same name to find them, that we can share
sensor library over projects which use different sensor device.

Signed-off-by: Figo Wang <figow@codeaurora.org>
Change-Id: I51ef9f2dfea23895a062009c7fdeb21d3fcef91a