core: remove buggy flags sanitization from line-config

We try to drop potentially set output flags from line config if edge
detection is enabled but we use the library enum instead of the one from
the uAPI. In any case, we should actually loudly complain if user tries
to use the output mode with edge-detection (like we do currently) so just
remove offending lines entirely.

Reported-by: Anne Bezemer <j.a.bezemer@opensourcepartners.nl>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Kent Gibson <warthog618@gmail.com>
Reviewed-by: Anne Bezemer <j.a.bezemer@opensourcepartners.nl>

lib/line-config.c

@@ -381,18 +381,15 @@ static uint64_t make_kernel_flags(struct gpiod_line_settings *settings)
  case GPIOD_LINE_EDGE_FALLING:
  flags |= (GPIO_V2_LINE_FLAG_EDGE_FALLING |
  GPIO_V2_LINE_FLAG_INPUT);
- flags &= ~GPIOD_LINE_DIRECTION_OUTPUT;
  break;
  case GPIOD_LINE_EDGE_RISING:
  flags |= (GPIO_V2_LINE_FLAG_EDGE_RISING |
  GPIO_V2_LINE_FLAG_INPUT);
- flags &= ~GPIOD_LINE_DIRECTION_OUTPUT;
  break;
  case GPIOD_LINE_EDGE_BOTH:
  flags |= (GPIO_V2_LINE_FLAG_EDGE_FALLING |
  GPIO_V2_LINE_FLAG_EDGE_RISING |
  GPIO_V2_LINE_FLAG_INPUT);
- flags &= ~GPIOD_LINE_DIRECTION_OUTPUT;
  break;
  default:
  break;