fixes issue with SDCard driver and also changes how the machine.SPI.Bus driver works

The spi bus driver has now been split into 4 different buy types.

* `SPI.Bus`: normal SPI bus type
* `SPI.DualBus`: Half duplex using both the miso and mosi pins for transmitting or receiving. This makes the driver 2 times faster when sending a ot of data
* `SPI.QuadBus`: Half duplex using a total of 4 pins/lanes to transmit and receive
* `SPI.OctalBus`: Half duplex using a total of 8 pins/lanes to transmit and receive

Author: kdschlosser

ext_mod/lcd_bus/esp32_src/spi_bus.c

@@ -151,9 +151,9 @@ static mp_obj_t mp_lcd_spi_bus_make_new(const mp_obj_type_t *type, size_t n_args
     self->panel_io_config.flags.quad_mode = (unsigned int)args[ARG_quad].u_bool;
     self->panel_io_config.flags.octal_mode = (unsigned int)args[ARG_octal].u_bool;
 
-    if (!spi_bus->dual) self->panel_io_config.flags.sio_mode = 0;
-    if (!spi_bus->quad) self->panel_io_config.flags.quad_mode = 0;
-    if (!spi_bus->octal) self->panel_io_config.flags.octal_mode = 0;
+    if (!(spi_bus->buscfg.flags & SPICOMMON_BUSFLAG_DUAL)) self->panel_io_config.flags.sio_mode = 0;
+    if (!(spi_bus->buscfg.flags & SPICOMMON_BUSFLAG_QUAD)) self->panel_io_config.flags.quad_mode = 0;
+    if (!(spi_bus->buscfg.flags & SPICOMMON_BUSFLAG_OCTAL)) self->panel_io_config.flags.octal_mode = 0;
 
     self->panel_io_handle.del = &spi_del;
     self->panel_io_handle.init = &spi_init;

micropy_updates/common/mp_spi_common.h

@@ -4,6 +4,7 @@
 
 #include "py/obj.h"
 #include "py/runtime.h"
+#include "driver/spi_master.h"
 
 #ifndef __MP_SPI_COMMON_H__
     #define __MP_SPI_COMMON_H__
@@ -20,19 +21,8 @@
     struct _mp_machine_hw_spi_bus_obj_t {
         mp_obj_base_t base;
         uint8_t host;
-        mp_obj_t sck;
-        mp_obj_t mosi;
-        mp_obj_t miso;
-        mp_obj_t data2;
-        mp_obj_t data3;
-        mp_obj_t data4;
-        mp_obj_t data5;
-        mp_obj_t data6;
-        mp_obj_t data7;
-        bool dual;
-        bool quad;
-        bool octal;
         uint8_t device_count;
+        spi_bus_config_t buscfg;
         mp_machine_hw_spi_device_obj_t **devices;
         mp_machine_hw_spi_state_t state;
         const void *user_data;