drivers/esp-hosted: Rename Bluetooth HCI backend driver.

Rename `bthci` to `bthci_uart` for consistency with the CYW43 driver and to
distinguish it from HCI backends that use a different transport.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

Author: iabdalkader

drivers/esp-hosted/esp_hosted_bthci.c …ivers/esp-hosted/esp_hosted_bthci_uart.cdrivers/esp-hosted/esp_hosted_bthci.c renamed to drivers/esp-hosted/esp_hosted_bthci_uart.c drivers/esp-hosted/esp_hosted_bthci.c renamed to drivers/esp-hosted/esp_hosted_bthci_uart.c

@@ -504,7 +504,7 @@ ESP_HOSTED_SRC_C = $(addprefix $(ESP_HOSTED_DIR)/,\
 	)
 
 ifeq ($(MICROPY_PY_BLUETOOTH),1)
-ESP_HOSTED_SRC_C += $(ESP_HOSTED_DIR)/esp_hosted_bthci.c
+ESP_HOSTED_SRC_C += $(ESP_HOSTED_DIR)/esp_hosted_bthci_uart.c
 endif
 
 # Include the protobuf-c support functions