update spec.

- add SO26 and SCL24
- fix spec. SO-01G, SC-01G, SC-04F, SH-05F, SH-01F, KYY23, KYY24, URBANO L02, SOL24, SOL23, SCL22, LGL22, IS12T and Z3560
update Storage APIs

- remove _isPrivateMode internal function.
- rename Spec#isQuota to Spec#isDiskQuota.