extcon: usbc-tusb320: Set interrupt polarity based on device-tree

extcon: usbc-tusb320: Set interrupt polarity based on device-tree

Remove 'IRQF_TRIGGER_FALLING' request which is not allowed on
every interrupt controller (i.e. arm64 GIC). Replace flag by a
request that depends on the actual device-tree setting.

Link: https://lore.kernel.org/all/02a701da2717$48abf150$da03d3f0$@samsung.com/
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311221355.yxYpTIw3-lkp@intel.com/
Signed-off-by: Lukas Funke <lukas.funke@weidmueller.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>