Fix to previous commit

I used the binary directory instead of the source directory to specify
the spec.in path, which passed local testing since these directories
are in the same location. This is not guarenteed to be true.

Change-Id: I1b49ca8453b9c074a947104c26fb39667d728a8e
Signed-off-by: Jeremy Newton <Jeremy.Newton@amd.com>

CMakeLists.txt

@@ -336,7 +336,7 @@ endif()
 ## Specify a RPM SPEC template
 # This template was generated by using "CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE"
 # but I've modified it to support CPACK_RPM_PACKAGE_RECOMMENDS for EL8+ and SLE
-set ( CPACK_RPM_USER_BINARY_SPECFILE "${CMAKE_CURRENT_BINARY_DIR}/RPM/${CPACK_RPM_PACKAGE_NAME}.spec.in" )
+set ( CPACK_RPM_USER_BINARY_SPECFILE "${CMAKE_CURRENT_SOURCE_DIR}/RPM/${CPACK_RPM_PACKAGE_NAME}.spec.in" )
 
 # 'dist' breaks manual builds on debian systems due to empty Provides
 execute_process( COMMAND rpm --eval %{?dist}