Fix BPM script to put temp files into obj tree

Depending on where the input files and scripts live and if we are
compiling in a backing build or a sandbox, the temporary (.crc)
files can sometimes be created inside a readonly tree.  This change
will place the temp files in the same (writeable) output directory
as the final binary images.

Change-Id: Ib5e6ed5ffeb825d46681eda89d93311931365663
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/81787
Reviewed-by: Matthew Raybuck <matthew.raybuck@ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>

src/build/buildpnor/buildBpmFlashImages.pl

@@ -119,7 +119,7 @@ sub generateFirmwareImage
     my ($i_fileName, $i_outputDir) = @_;
     my $this_func = (caller(0))[3];
 
-    my $intermediateFileName = generateIntermediateImage($i_fileName);
+    my $intermediateFileName = generateIntermediateImage($i_fileName,$i_outputDir);
 
     open my $inputFileHandle, '<:encoding(UTF-8)', $intermediateFileName
         or die "Failed to open $intermediateFileName";
@@ -745,15 +745,15 @@ sub generateOutputNameAndVersion
 ################################################################################
 sub generateIntermediateImage
 {
-    my $i_fileName = shift;
+    my ($i_fileName, $i_outputDir) = @_;
 
     # Parse the file name into its filename, path, and suffix.
     my ($name, $path, $suffix) = fileparse($i_fileName, ".txt");
 
     # Parse the file name into its filename, path, and suffix.
     my ($utilName, $utilPath, $utilSuffix) = fileparse($bpmUtilScript, ".txt");
 
-    my $intermediateFileName = $utilPath . $name . ".crc";
+    my $intermediateFileName = $i_outputDir . $name . ".crc";
 
     # Call the python script which will insert the CRC
     my $pythonReturn = system($bpmUtilScript,