devicetree: add `DT_ANY_INST_HAS_BOOL_STATUS_OKAY`

Add `DT_ANY_INST_HAS_BOOL_STATUS_OKAY` as a complement to
`DT_ANY_INST_HAS_PROP_STATUS_OKAY`. This macro exists because boolean
properties not present on a node are still generated with a value of 0,
and therefore cannot be used with `DT_ANY_INST_HAS_PROP_STATUS_OKAY`.

Signed-off-by: Jordan Yates <jordan@embeint.com>