CHRE API: Clarify chreAbort()'s immediate effect

There was some confusion about whether the CHRE should stop a
nanoapp immediately upon this call, or wait until control is
returned to the CHRE.  We clarify this to avoid future
confusion.

Bug: 32016202
Change-Id: Ibc3dc4900fb473e15c573176461ae15dbf4d9bcb
1 file changed