PrmPkg/Test/PrmPkgHostTest.dsc: Add initial file

Adds a new DSC file that will be used to build host-based unit tests
in PrmPkg.

Cc: Andrew Fish <afish@apple.com>
Cc: Kang Gao <kang.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Benjamin You <benjamin.you@intel.com>
Cc: Liu Yun <yun.y.liu@intel.com>
Cc: Ankit Sinha <ankit.sinha@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Acked-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Ankit Sinha <ankit.sinha@intel.com>

PrmPkg/Test/PrmPkgHostTest.dsc

@@ -0,0 +1,17 @@
+## @file
+# PrmPkg DSC file used to build host-based unit tests.
+#
+# Copyright (c) Microsoft Corporation.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  PLATFORM_NAME           = PrmPkgHostTest
+  PLATFORM_GUID           = 5BCCFC54-2162-42FB-ABCA-5B8D0DC4013C
+  PLATFORM_VERSION        = 0.1
+  DSC_SPECIFICATION       = 0x00010005
+  OUTPUT_DIRECTORY        = Build/$(PLATFORM_NAME)/HostTest
+  SUPPORTED_ARCHITECTURES = IA32|X64
+  BUILD_TARGETS           = NOOPT
+  SKUID_IDENTIFIER        = DEFAULT