board gen4iod: change flash mode from qio to dio (#4616)

on behalf of @4dsystems #4613:
Need to change flash mode from qio to dio, due to a change in supplier of Flash Memory.
Old modules work just the same with no speed difference noticed,
new modules will not work without the change to dio however.

Author: d-a-v

boards.txt

@@ -3811,7 +3811,7 @@ gen4iod.menu.VTable.heap.build.vtable_flags=-DVTABLES_IN_DRAM
 gen4iod.menu.VTable.iram=IRAM
 gen4iod.menu.VTable.iram.build.vtable_flags=-DVTABLES_IN_IRAM
 gen4iod.upload.resetmethod=nodemcu
-gen4iod.build.flash_mode=qio
+gen4iod.build.flash_mode=dio
 gen4iod.build.flash_freq=80
 gen4iod.menu.FlashSize.512K0=512K (no SPIFFS)
 gen4iod.menu.FlashSize.512K0.build.flash_size=512K

tools/boards.txt.py

@@ -677,7 +677,7 @@
             },
         'macro': [
             'resetmethod_nodemcu',
-            'flashmode_qio',
+            'flashmode_dio',
             'flashfreq_80',
             '512K',
             ],