esp_rom: Add initial ESP32-C3 support

From internal commit 7761d6e8

components/esp_rom/esp32c3/esp_rom_caps.h

@@ -0,0 +1,19 @@
+// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#define ESP_ROM_HAS_CRC_LE      (1) // ROM CRC library supports Little Endian
+#define ESP_ROM_HAS_CRC_BE      (1) // ROM CRC library supports Big Endian
+#define ESP_ROM_HAS_JPEG_DECODE (1) // ROM has JPEG decode library