drivers: adc: adc-shell: Add support for ADS111x ADCs to adc-shell.c

The adc-shell uses a hardcoded list of defines to check whether it should
throw a compile-time error. The ADS1119 and ADS1112 driver both support
the APIs needed by the shell, so this commit enables support for them in
the hardcoded support list.

Signed-off-by: Jordan Montgomery <jordan.montgomery@getcruise.com>