#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11111508
use warnings;

open my $fh1, '<', \<<END;
ibl_ss_fuse_c0_r0/MRA_PVT_Tuning = 0x94,
ibl_ss_fuse_c0_r0/S3M_SPARE_1B7_3to7 = 0x0,
ON_DIE_FILLER/filler_fuse = 0x0,
ON_DIE_FILLER/filler_byte = 0x0,
END

open my $fh2, '<', \<<END;
die0_IAX_fuse_dino_c1_r0, die0_IAX_fuse_dino_c1_r0_IAX_fuse_iax_wr_assist_pulsewidth, 0x5,
die0_ON_DIE_FILLER, die0_ON_DIE_FILLER_ON_DIE_FILLER_filler_byte, 0xb,
die0_ON_DIE_FILLER, die0_ON_DIE_FILLER_ON_DIE_FILLER_filler_fuse, 0xa
END

my %values;
while( <$fh2> )
  {
  /([a-z][a-z_]*), (0x.),?$/ and $values{$1} = $2;
  }

while( <$fh1> )
  {
  s!([a-z][a-z_]*) = \K(\w+)(?=,$)! $values{$1} // $2 !e;
  print;
  }

##</code><code>##

ibl_ss_fuse_c0_r0/MRA_PVT_Tuning = 0x94,
ibl_ss_fuse_c0_r0/S3M_SPARE_1B7_3to7 = 0x0,
ON_DIE_FILLER/filler_fuse = 0xa,
ON_DIE_FILLER/filler_byte = 0xb,