[PATCH] BaseTools/Edk2Setup.bat: Fix build errors from VS tools PREFIX ENV missing

[Cinnamon Shia <cinnamon.shia@hpe.com>]

BaseTools/set_vsprefix_envs.bat is introduced for setting the PREFIX ENV
of VS tools in tools_def.template.
For example:

DEFINE VS2015_BIN      = ENV(VS2015_PREFIX)Vc\bin
DEFINE VS2015_DLL      = ENV(VS2015_PREFIX)Common7\IDE;DEF(VS2015_BIN)
DEFINE VS2015_BINX64   = DEF(VS2015_BIN)\x86_amd64

The issue is EdkSetup.bat calls BaseTools\set_vsprefix_envs.bat but
Edk2Setup.bat does not.

Edk2Setup.bat should call BaseTools/set_vsprefix_envs.bat  to set up the
PREFIX ENV of VS tools.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Cinnamon Shia <cinnamon.shia@hpe.com>
---
 Edk2Setup.bat | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Edk2Setup.bat b/Edk2Setup.bat
index 68f46dc..017e88d 100755
--- a/Edk2Setup.bat
+++ b/Edk2Setup.bat
@@ -355,6 +355,15 @@
 @if defined REBUILD_TOOLS goto SetConf
 @if defined SVN_PULL goto SetConf
 
+@REM call set_vsprefix_envs.bat to set up the PREFIX env for VS tool path.
+@IF NOT exist "%EDK_TOOLS_PATH%\set_vsprefix_envs.bat" (
+  @echo.
+  @echo !!! ERROR !!! The set_vsprefix_envs.bat was not found !!!
+  @echo.
+  @goto ExitFailure
+)
+@call %EDK_TOOLS_PATH%\set_vsprefix_envs.bat
+
 @echo.
 @echo Rebuilding of the tools is not required. Binaries of the latest,
 @echo tested versions of the tools have been tested and included in the
-- 
2.10.0.windows.1