Don't print error message when there are no row pins and no col pins (qmk#20104)

* Don't print error message when there are no row pins and no col pins

This error message could be triggered for example if MATRIX_IO_DELAY is
configured in config.h, but the matrix is a custom one. The custom matrix
can still call back to existing delay functions that make use of the
MATRIX_IO_DELAY macro. In this case 'matrix_pins' in info_data will be true,
but there will be no 'direct' 'cols' or 'rows' in info_data['matrix_pins'],
and without this commit it would trigger an invalid error.

* Update lib/python/qmk/info.py

Co-authored-by: Nick Brassel <nick@tzarc.org>

---------

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>

Author: 3 people

lib/python/qmk/info.py

@@ -743,6 +743,9 @@ def _check_matrix(info_data):
         elif 'cols' in info_data['matrix_pins'] and 'rows' in info_data['matrix_pins']:
             col_count = len(info_data['matrix_pins']['cols'])
             row_count = len(info_data['matrix_pins']['rows'])
+        elif 'cols' not in info_data['matrix_pins'] and 'rows' not in info_data['matrix_pins']:
+            # This case caters for custom matrix implementations where normal rows/cols are specified
+            return
 
         if col_count != actual_col_count and col_count != (actual_col_count / 2):
             # FIXME: once we can we should detect if split is enabled to do the actual_col_count/2 check.