[edk2-staging/UEFI_PCI_ENHANCE-2 PATCH V1] MdePkg/Protocols: New PCI Express Platform Protocol, EFI encodings

["Javeed, Ashraf" <ashraf.javeed@intel.com>]

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1954

Three interfaces added to PCI Express Platform Protocol:-
(1) GetDevicePolicy() -> to retrieve device-specific platform policies
(2) NotifyDeviceState() -> to notify platform about device PCI Express
    configuration state
(3) GetPolicy() -> to retrieve platform policy about the PCI Express
    feature list
PCI Express Override Protocol is made alias to PCI Express Platform
Protocol.
EFI encodings introduced for the following PCI Express features, are:
1.	Maximum Payload Size (MPS)
2.	Maximum Read Request Size (MRRS)
3.	Extended Tag
4.	Relax Order Enable
5.	No Snoop Enable
6.	ASPM support
7.	Common Clock Configuration
8.	Extended SYNC
9.	Atomic Op
10.	LTR Enable
11.	PTM support
12.	CTO support
13.	CPM
14.	L1 PM Substates

New source files with unique definitions are:
MdePkg/Include/Protocol/PciExpressPlatform.h,
MdePkg/Include/Protocol/PciExpressOverride.h

Signed-off-by: Ashraf Javeed <ashraf.javeed@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
---

In V1: Code Syntax correction made.
---
 MdePkg/Include/Protocol/PciExpressPlatform.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Include/Protocol/PciExpressPlatform.h b/MdePkg/Include/Protocol/PciExpressPlatform.h
index 8a28418..dc58268 100644
--- a/MdePkg/Include/Protocol/PciExpressPlatform.h
+++ b/MdePkg/Include/Protocol/PciExpressPlatform.h
@@ -643,11 +643,11 @@ typedef struct {
  **/
 typedef
 EFI_STATUS
-(EFIAPI * EFI_PCI_EXPRESS_GET_POLICY) {
+(EFIAPI * EFI_PCI_EXPRESS_GET_POLICY) (
   IN CONST  EFI_PCI_EXPRESS_PLATFORM_PROTOCOL     *This,
   IN        UINTN                                 Size,
   IN OUT    EFI_PCI_EXPRESS_PLATFORM_POLICY       *PlatformPolicy
-};
+);
 
 ///
 /// This protocol provides the interface between the PCI bus driver/PCI Host
-- 
2.21.0.windows.1