input: touchscreen: Add firmware upgrade via sysfs entry

Add sysfs entry for firmware upgrade support in Goodix
driver.

CRs-fixed: 575618
Change-Id: If71d4020223547e0db425c9fd37819c6166efcab
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>
2 files changed