drm/mipi_dbi: Use simple right shift instead of double negation
GCC complains about dubious bitwise OR operand: drivers/gpu/drm/drm_mipi_dbi.c:1024:49: warning: dubious: x | !y CC [M] drivers/gpu/drm/drm_mipi_dbi.o As long as buffer is consist of byte (u8) values, we may use simple right shift and satisfy compiler. It also reduces amount of operations needed. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20191017114912.61522-1-andriy.shevchenko@linux.intel.com
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