touch/common: return EPROBE_DEFER when the GPIO is invalid.

The GPIO may be invalid when this module loads before pinctrl module
so return EPROBE_DEFER for retry.

Bug: 263205231
Test: no kernel panic

Change-Id: Ibe4910ce2015ab464faf3ee35b4fb06524a6512a
Signed-off-by: davidycchen <davidycchen@google.com>
1 file changed