Handle long responses by keymint IPC.

The KeyMint TA may send responses that are longer thant the 8K buffer
that the KeyMint HAL holds. This patch introduces
trusty_keymaster_call_2 which can grow the receive buffer on demand.

Ignore-AOSP-First: No mergepath from AOSP.

Bug: 195622501
Test: VTS and CTS test for regression testing.
Change-Id: Ia06e590e547e649ca81cda9a71851f334970788f