Introduce new kernel config symbol for Microchip usb5744 SMBus programming
support. Since usb5744 i2c initialization routine uses i2c SMBus APIs these
APIs should only be invoked when kernel has I2C support. This new kernel
config describes the dependency on I2C kernel support and fix the below
build issues when USB_ONBOARD_DEV=y and CONFIG_I2C=m.

riscv64-linux-ld: drivers/usb/misc/onboard_usb_dev.o:
undefined reference to `i2c_find_device_by_fwnode'
drivers/usb/misc/onboard_usb_dev.c:408:(.text+0xb24): undefined
reference to `i2c_smbus_write_block_data'
<snip>

Parsing of the i2c-bus bus handle is not put under usb5744 kernel config
check as the intention is to report an error when DT is configured for
usb5744 SMBus support and kernel has USB_ONBOARD_DEV_USB5744 disabled.

Fixes: 6782311d ("usb: misc: onboard_usb_dev: add Microchip usb5744 SMBus programming support")
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Suggested-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202409140539.3Axwv38m-lkp@intel.com/Acked-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Link: https://lore.kernel.org/r/1727529992-476088-1-git-send-email-radhey.shyam.pandey@amd.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>