wic: use unique partition number

This is a preparation for 'include' support.

Used unique counter instead of line number for partitions
in .ks file. Line numbers can be equal for different .ks files,
which can cause problems if one .ks file is included into
another.

(From OE-Core rev: cc2233b51f1d22d4e540f4a3e9ceedd7ede9ffa9)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/ksparser.py

@@ -84,6 +84,7 @@ class KickStart(object):
         self.partitions = []
         self.bootloader = None
         self.lineno = 0
+        self.partnum = 0
 
         parser = KickStartParser()
         subparsers = parser.add_subparsers()
@@ -130,7 +131,8 @@ class KickStart(object):
                         raise KickStartError('%s:%d: %s' % \
                                              (confpath, lineno, err))
                     if line.startswith('part'):
-                        self.partitions.append(Partition(parsed, lineno))
+                        self.partnum += 1
+                        self.partitions.append(Partition(parsed, self.partnum))
                     else:
                         if not self.bootloader:
                              self.bootloader = parsed