add setBrightness docs
Signed-off-by: Nleafly2021 <figo.yefei@huawei.com>
Change-Id: I4d2b52cbaa4b8bcb832fa7251d4041f7530c166d
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Signed-off-by: Nleafly2021 <figo.yefei@huawei.com>
Change-Id: I4d2b52cbaa4b8bcb832fa7251d4041f7530c166d