boards/risc-v/esp32c6: Add missing config for esp32c6 romfs

[eren-terzioglu]

Summary

• boards/risc-v/esp32c6: Add missing config for esp32c6 romfs

Add missing config for romfs on esp32c6-devkitc

Impact

Impact on user: No

Impact on build: No

Impact on hardware: No

Impact on documentation: No

Impact on security: No

Impact on compatibility: No

Testing

esp32c6-devkitc:romfs config used to test

Building

Command used to build:

make -j distclean && ./tools/configure.sh esp32c6-devkitc:romfs && make -j && make download ESPTOOL_PORT=/dev/ttyUSB0 ESPTOOL_BAUD=921600 ESPTOOL_BINDIR=./

Running

Device restarted after picocom or anything similar connection

Results

Expected output should be like this:

ESP-ROM:esp32c6-20220919
...
rc.sysinit is called!
rcS file is called!

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