backlight: Minor code cleanups for hp680_bl.c
Since people use this code as an example, clean it up to
to use platform_*_drvdata instead of a global variable.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
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Since people use this code as an example, clean it up to
to use platform_*_drvdata instead of a global variable.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>