reate_curve

  This is called from the PAPRD work, so the atomic variant
  is not needed.

* Change return type of ar9003_paprd_setup_gain_table

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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