sys_log: replace old debug macros at ADC driver

ADC driver is now using new system log macros, also update the Kconfig
variable to be a level rather than a bool.
JIRA: ZEP-311

Change-Id: Iac96c37989e44484808ded515397d457186240e0
Signed-off-by: Genaro Saucedo Tejada <genaro.saucedo.tejada@intel.com>
2 files changed