tests/avocado: boot ppc64 pseries replay-record test to Linux VFS mount

This the ppc64 record-replay test is able to replay the full kernel boot
so try enabling it.

Acked-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

tests/avocado/replay_kernel.py

@@ -255,8 +255,7 @@ def test_ppc64_pseries(self):
         kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
 
         kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE + 'console=hvc0'
-        # icount is not good enough for PPC64 for complete boot yet
-        console_pattern = 'Kernel command line: %s' % kernel_command_line
+        console_pattern = 'VFS: Cannot open root device'
         self.run_rr(kernel_path, kernel_command_line, console_pattern)
 
     def test_ppc64_powernv(self):