From: Frank Li <frank.li@nxp.com>
Subject: [PATCH v5 1/4] PCI: layerscape: Add function pointer for exit_from_l2()

Since difference SoCs require different sequence for exiting L2, let's add a
separate "exit_from_l2()" callback. This callback can be used to execute SoC
specific sequence.

Change ls_pcie_exit_from_l2() return value from void to int. Return error if
exit_from_l2() failure at exit resume flow.

Reviewed-by: Manivannan Sadhasivam <redacted>
Signed-off-by: Frank Li <Frank.Li@nxp.com>

Acked-by:  Roy Zang <Roy.Zang@nxp.com>
Roy

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