The functions fnmatch(), getopt(), getentropy()
and others are grouped into the standard Option Group
POSIX_C_LIB_EXT.
The getentropy() function is currently in-draft for
Issue 8 as of 2021.
https://www.opengroup.org/austin/docs/austin_1110.pdf
Not surprisingly, the POSIX_C_LIB_EXT Option Group
also includes the highly debated strnlen() function.
Moving that function will be deferred until later.
Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
When a sensor that depends on an ADC is enabled in devicetree, enable
the ADC subsystem. ADC is roughly equivalent to a bus for these sensors
(the mechanism through which data is transferred), which had the same
conversion applied in #48707.
The same benefits apply here, namely removing the need for the following
pattern in board `.kconfig` files:
```
configdefault ADC
default y if SENSOR
```
Signed-off-by: Jordan Yates <jordan@embeint.com>
