target-arm: Mark 1136r1 as a v6K core

target-arm: Mark 1136r1 as a v6K core

The 1136r1 is actually a v6K core (unlike the 1136r0); mark it as such,
thus enabling the TLS registers, NOP hints, CLREX, half and byte wide
exclusive load/stores, etc.

The VA-to-PA translation registers are not present on 1136r1, so
introduce a new feature flag for them, which is enabled on 1176,
11MPCore and all v7 cores.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>