The ones I know of are:
Psionically Attuned: +1 Kinetic damage/level
Psionically Empowering*: Amplifies a Kineticist’s psionic ability damage by 5%
*I think they changed the name of this. I remember it being more confusing. The tooltip is still kind of misleading because of the existence of Psionic damage, which Kineticist doesn't do.
Theres also Psionic Recovery and Amplifying/Nullifying for armors.
I tried putting your quoted text into the Search function in the code and didn't find anything.
I know of at least four Flags that aren't hooked up to anything. (Two higher levels of Psionic Recovery, Airconditioned and Rad Hardened).