Fixes incorrect name in esp32 spi module

Fixes issue with partition sizing for the esp32

Fixes #68

Author: kdschlosser

builder/esp32.py

@@ -953,8 +953,8 @@ def compile(*args):  # NOQA
         )
         sys.stdout.flush()
 
-        compile_cmd[4] = 'SECOND_BUILD=1'
-        ret_code, output = spawn(cmds, env=env, cmpl=True)
+        cmd_[4] = 'SECOND_BUILD=1'
+        ret_code, output = spawn(cmd_, env=env, cmpl=True)
 
         if ret_code != 0:
             sys.exit(ret_code)

micropy_updates/esp32/machine_hw_spi.c

@@ -462,7 +462,7 @@ void machine_hw_spi_bus_initilize(machine_hw_spi_bus_obj_t *bus)
 #if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3
     ret = spi_bus_initialize((spi_host_device_t)bus->host, &buscfg, SPI_DMA_CH_AUTO);
 #else
-    if (self->host == SPI2_HOST) {
+    if (bus->host == SPI2_HOST) {
         ret = spi_bus_initialize((spi_host_device_t)bus->host, &buscfg, 1);
     } else {
         ret = spi_bus_initialize((spi_host_device_t)bus->host, &buscfg, 2);