esp_psram: improve mapping log when physical range is larger

After this commit, when physical address is larger than vaddr range,
driver will still map as much as it can, but also give a verbose level
log to show the actual mapped size

components/esp_psram/esp_psram.c

@@ -159,8 +159,8 @@ esp_err_t esp_psram_init(void)
     //----------------------------------Map the PSRAM physical range to MMU-----------------------------//
     intptr_t vaddr_start = mmu_get_psram_vaddr_start();
     if (vaddr_start + psram_available_size > mmu_get_psram_vaddr_end()) {
-        ESP_EARLY_LOGV(TAG, "Virtual address not enough for PSRAM!");
         psram_available_size = mmu_get_psram_vaddr_end() - vaddr_start;
+        ESP_EARLY_LOGV(TAG, "Virtual address not enough for PSRAM, map as much as we can. %dMB is mapped", psram_available_size / 1024 / 1024);
     }
 
 #if CONFIG_IDF_TARGET_ESP32