ARM: dts: dra7: Enable x2 lane mode support

Add properties to enable PCIe x2 lane mode since all dra7 based SoCs support x2 lane mode.

However only dra76-evm has a slot which can support x2 lane cards. Hence only enable x2 lane mode in dra76-evm. (am571x-idk can support x2 lane mode but that makes usb port not functional so not including the patch to enable x2 mode in am571x-idk)

Also included in this series is patch to enable PCIe configs (both host and device) in omap2plus_defconfig and multi_v7_defconfig

In order to get x2 mode working [1] is required.

However by keeping the older compatible, this series won't break functionality if this series is merged before [1]

[1] -> https://lkml.org/lkml/2017/12/19/175

Kishon Vijay Abraham I (7):
ARM: dts: dra7: Add properties to enable PCIe x2 lane mode
ARM: dts: DRA74x: Use PCIe compatible specific to dra74
ARM: dts: DRA72x: Use PCIe compatible specific to dra72
ARM: dts: dra76-evm: Enable x2 PCIe lanes
ARM: dts: dra7: Remove deprecated PCI compatible string
ARM: omap2plus_defconfig: Enable CONFIG_PCI_DRA7XX (Host & Device
modes)
ARM: multi_v7_defconfig: Enable CONFIG_PCI_DRA7XX (Host & Device
modes)

 arch/arm/boot/dts/dra7.dtsi          |  9 +++++----
 arch/arm/boot/dts/dra72x.dtsi        | 12 ++++++++++++
 arch/arm/boot/dts/dra74x.dtsi        | 12 ++++++++++++
 arch/arm/boot/dts/dra76-evm.dts      | 16 ++++++++++++++++
 arch/arm/configs/multi_v7_defconfig  |  6 ++++++
 arch/arm/configs/omap2plus_defconfig |  8 ++++++++
 6 files changed, 59 insertions(+), 4 deletions(-)

2.11.0