Figured out how to turn on PSRAM

Now it looks like you can just allocate from a regular "malloc"
Code ran successfully (afaict) when writing to 7MB - didn't seem
to when doing 8MB. Not 100% sure why, but I don't think it'll
matter tbh

components/dht22/dht22.c

@@ -1,5 +1,6 @@
 #include "dht22.h"
 #include "sdkconfig.h"
+#include "esp_log.h"
 
 #define DATA_GPIO CONFIG_DHT22_DATA_GPIO
 
@@ -15,7 +16,6 @@ deci_degrees_c _dht22_temperature = INT16_MIN;
 dht22_error dht22_read() {
   uint8_t data[5] = {0};
 
-
   // TODO: Actually figure out how to read the data from the chip.
   
   // TODO test that data[x] << 8 will be promoted to 16bits otherwise I'm shifting them to just zeros
@@ -28,6 +28,7 @@ dht22_error dht22_read() {
   if (checksum_val != data[4]) {
     _dht22_relative_humidity = UINT16_MAX;
     _dht22_temperature = INT16_MIN;
+    ESP_LOGE(TAG, "Error in final checksum check");
     return DHT22_CHECKSUM_ERROR;
   }