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gpio: omap: simplify omap_toggle_gpio_edge_triggering()
This function open-codes an exclusive-or bitwise operation using an
if() statement and explicitly setting or clearing the bit. Instead,
use an exclusive-or operation instead, and simplify the function.
We can combine the preprocessor conditional using IS_ENABLED() and
gain some additional compilation coverage.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>