Update UART terminals used by TC FVP model

terminal_uart_aon is no more supported by recent TC FVP Model.
Use scp terminal_s0 instead and update the total uart count.

FASTSIM_CMN_INTERNAL_RNSAM environment variable is deprecated
in the new TC FVP model. Made necessary fix in the run fragment.

Change-Id: I14a957cb6d0f45675c1fd67b9968c410550f65fe
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
2 files changed