tree 929d9af741da43caa515aea03db7590e03946229
parent 9564df645ee7662a86808f38d964225fe78506e3
author Minghuan Lian <Minghuan.Lian@freescale.com> 1436499308 +0800
committer York Sun <yorksun@freescale.com> 1438628798 -0700

drivers/pci: Add function to find an extended capability

PCIe extends device's configuration space to 4k and provides
extended capability. The patch adds function to find them.
The code is ported from Linux PCIe driver.

Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: York Sun <yorksun@freescale.com>