ArmPlatformPkg/Bds: Get User inputs in Unicode

The user input was getting in Ascii and converted later to Unicode
when required.
In this change, the user inputs are caught in Unicode and converted
to Ascii only when needed.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12310 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/Bds/BdsInternal.h

@@ -128,6 +128,18 @@ BootDeviceGetDeviceSupport (
   OUT BDS_LOAD_OPTION_SUPPORT**  DeviceSupport
   );
 
+EFI_STATUS
+GetHIInputStr (
+  IN OUT CHAR16  *CmdLine,
+  IN     UINTN   MaxCmdLine
+  );
+
+EFI_STATUS
+EditHIInputStr (
+  IN OUT CHAR16  *CmdLine,
+  IN     UINTN   MaxCmdLine
+  );
+
 EFI_STATUS
 GetHIInputAscii (
   IN OUT CHAR8   *CmdLine,