boards/esp32s3: enable CONFIG_SYSTEM_CDCACM for usbnsh configs

[JianyuWang0623]

Summary

The shared esp32s3 init.rc gates "exec -- sercon" on CONFIG_SYSTEM_CDCACM,
so the usbnsh configs never connect the CDC/ACM gadget and boot with no
USB console after switching to nxinit.

Enable CONFIG_SYSTEM_CDCACM in the usbnsh defconfig of esp32s3-devkit,
esp32s3-eye, esp32s3-lhcbit, esp32s3-meadow and esp32s3-touch-lcd7, the
same fix already applied to esp32s3-xiao in 8bd50d2.
SYSTEM_CDCACM selects BOARDCTL_USBDEVCTRL, so savedefconfig drops the
latter as redundant.

Impact

Restores the USB CDC/ACM console on the five esp32s3 usbnsh configs.
Defconfig-only change.

Testing

• All five configs: ./tools/configure.sh :usbnsh, make
  savedefconfig (no diff) and full build pass.
• Hardware: esp32s3-devkit:usbnsh flashed on an ESP32-S3 board
  (lckfb-szpi); CDC/ACM gadget 0525:a4a7 enumerates and nsh runs on
  /dev/ttyACM*:

nsh> uname -a
NuttX 13.0.1 9d3472d4191 ... xtensa esp32s3-devkit
nsh> ps
  PID PPID ... COMMAND
    2    0 ... init_main
    4    2 ... sh

[github-actions]

MemBrowse Memory Report

qemu-armv8a

• Code: .text.init_builtin_run +60 B (+0.0%, 347,480 B)
• Data: .bss.g_rr_values -12 B (-0.0%, 77,462 B)

qemu-intel64

• Code: .text +74 B (+0.0%, 8,682,514 B)
  No memory changes detected for:
• arduino-mega2560
• esp32-devkitc
• hifive1-revb
• mirtoo
• rx65n-rsk2mb
• s698pm-dkit
• stm32-nucleo-f103rb