EmbeddedPkg: rename gEfiMmcHostProtocolGuid to gEmbeddedMmcHostProtocolGuid

In EDK2, identifiers carrying the EFI prefix are reserved for ones
that are defined in the UEFI or PI specifications.

Since the MMC host protocol defined in EmbeddedPkg is not the one that
the UEFI spec defines, and given the confusion around this, let's rename
it to from gEfiMmcHostProtocolGuid to gEmbeddedMmcHostProtocolGuid.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>

EmbeddedPkg/Universal/MmcDxe/Mmc.c

@@ -216,7 +216,7 @@ MmcDriverBindingSupported (
   //
   Status = gBS->OpenProtocol (
                 Controller,
-                &gEfiMmcHostProtocolGuid,
+                &gEmbeddedMmcHostProtocolGuid,
                 (VOID **) &MmcHost,
                 This->DriverBindingHandle,
                 Controller,
@@ -234,7 +234,7 @@ MmcDriverBindingSupported (
   //
   gBS->CloseProtocol (
       Controller,
-      &gEfiMmcHostProtocolGuid,
+      &gEmbeddedMmcHostProtocolGuid,
       This->DriverBindingHandle,
       Controller
       );
@@ -275,7 +275,7 @@ MmcDriverBindingStart (
   //
   Status = gBS->OpenProtocol (
                 Controller,
-                &gEfiMmcHostProtocolGuid,
+                &gEmbeddedMmcHostProtocolGuid,
                 (VOID **) &MmcHost,
                 This->DriverBindingHandle,
                 Controller,
@@ -326,10 +326,10 @@ MmcDriverBindingStop (
     MmcHostInstance = MMC_HOST_INSTANCE_FROM_LINK(CurrentLink);
     ASSERT(MmcHostInstance != NULL);
 
-    // Close gEfiMmcHostProtocolGuid
+    // Close gEmbeddedMmcHostProtocolGuid
     Status = gBS->CloseProtocol (
                 Controller,
-                &gEfiMmcHostProtocolGuid,
+                &gEmbeddedMmcHostProtocolGuid,
                 This->DriverBindingHandle,
                 Controller
                 );

EmbeddedPkg/Universal/MmcDxe/MmcDxe.inf

@@ -38,7 +38,7 @@
   gEfiDiskIoProtocolGuid
   gEfiBlockIoProtocolGuid
   gEfiDevicePathProtocolGuid
-  gEfiMmcHostProtocolGuid
+  gEmbeddedMmcHostProtocolGuid
   gEfiDriverDiagnostics2ProtocolGuid
 
 [Depex]