platform: fimc: fix bitwise negation of a boolean expression

drivers/media/platform/exynos/fimc-is2/sensor/flite/fimc-is-hw-flite-v4_20_0.c:28:9: error: bitwise negation of a boolean expression; did you m
ean logical negation? [-Werror,-Wbool-operation]
        cfg |= FLITE_REG_BINNINGON_CLKGATE_ON(enable);
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/exynos/fimc-is2/sensor/flite/fimc-is-hw-flite-v4_20_0.h:112:45: note: expanded from macro 'FLITE_REG_BINNINGON_CLKGATE_O
N'

Change-Id: I3974e42c46d235cae0ad4cfdd5d4cc0af7e7fafe