Some TI SimpleSwitcher voltage regulators

 * LM27313
 * LM2731XMF/YMF, LM2733XMF/YMF, LM2735XMF
 * LMR62014XMF/XSD, LMR62421XMF, LMR64010XMF
Merge pull request #35 from johnbeard/ti-regs

Some TI SimpleSwitcher voltage regulators