drivers: flash: Fix flash host type for CI builds

This fixes the APPCPU synthetic builds.

Signed-off-by: Marek Matej <marek.matej@espressif.com>

Author: marekmatej

drivers/flash/Kconfig.esp32

@@ -61,7 +61,7 @@ config ESP_FLASH_ASYNC_IPM
 
 config ESP_FLASH_REMOTE
 	bool "Remote IPM flash driver"
-	default y if (SOC_ESP32_APPCPU || SOC_ESP32S3_APPCPU || SOC_ESP32C6_LPCORE)
+	default y if (SOC_ESP32_APPCPU || SOC_ESP32S3_APPCPU || SOC_ESP32C6_LPCORE) && (IPM || MBOX)
 
 config ESP_FLASH_HOST
 	bool "Host functionality flash driver"