test: py: Use global pytestmark for hush tests

All tests in test_hush_if_test depends on hush parser to be
present. This patch simplify test dependencies by using global
pytestmark.

Reported-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Stephen Warren <swarren@nvidia.com>

test/py/tests/test_hush_if_test.py

@@ -8,6 +8,8 @@ import os
 import os.path
 import pytest
 
+pytestmark = pytest.mark.buildconfigspec('hush_parser')
+
 # The list of "if test" conditions to test.
 subtests = (
     # Base if functionality.
@@ -109,27 +111,23 @@ def exec_hush_if(u_boot_console, expr, result):
     response = u_boot_console.run_command(cmd)
     assert response.strip() == str(result).lower()
 
-@pytest.mark.buildconfigspec('hush_parser')
 def test_hush_if_test_setup(u_boot_console):
     """Set up environment variables used during the "if" tests."""
 
     u_boot_console.run_command('setenv ut_var_nonexistent')
     u_boot_console.run_command('setenv ut_var_exists 1')
 
-@pytest.mark.buildconfigspec('hush_parser')
 @pytest.mark.parametrize('expr,result', subtests)
 def test_hush_if_test(u_boot_console, expr, result):
     """Test a single "if test" condition."""
 
     exec_hush_if(u_boot_console, expr, result)
 
-@pytest.mark.buildconfigspec('hush_parser')
 def test_hush_if_test_teardown(u_boot_console):
     """Clean up environment variables used during the "if" tests."""
 
     u_boot_console.run_command('setenv ut_var_exists')
 
-@pytest.mark.buildconfigspec('hush_parser')
 # We might test this on real filesystems via UMS, DFU, 'save', etc.
 # Of those, only UMS currently allows file removal though.
 @pytest.mark.boardspec('sandbox')