ArmVirtPkg: RMM 1.0-eac2 - Add RsiRipasChangeFlags definitions

The RMM specification 1.0-eac2 updates the RSI_IPA_STATE_SET
interface to add a new parameter RsiRipasChangeFlags.

The RsiRipasChangeFlags fieldset is 64 bits and the bit 0
describes the RsiRipasChangeDestroyed type which is used
to indicate if a RIPAS change from DESTROYED should be
permitted or not.

Therefore, define the macros for specifying the
RsiRipasChangeFlags that represent the
RsiRipasChangeDestroyed type.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>