MdePkg/DxeRngLib: Add missing GUID declaration in inf

Add missing GUID declaration in DxeRngLib.inf.

Fixes: bd1f0eecc1df ("MdePkg/DxeRngLib: Request raw algorithm
instead of default")

Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Tested-by: Leif Lindholm <quic_llindhol@quicinc.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
diff --git a/MdePkg/Library/DxeRngLib/DxeRngLib.inf b/MdePkg/Library/DxeRngLib/DxeRngLib.inf
index 9c11959..281fec4 100644
--- a/MdePkg/Library/DxeRngLib/DxeRngLib.inf
+++ b/MdePkg/Library/DxeRngLib/DxeRngLib.inf
@@ -36,3 +36,4 @@
   gEfiRngAlgorithmSp80090Ctr256Guid

   gEfiRngAlgorithmSp80090Hash256Guid

   gEfiRngAlgorithmSp80090Hmac256Guid

+  gEfiRngAlgorithmRaw