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Taking reference from Table 2-1 of the Arm Generic Interrupt Controller Architecture Specification, Issue H, January 2022, add macros for the SPI and extended SPI ranges with the purpose of reusability on including the ArmPkg. Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Himanshu Sharma <Himanshu.Sharma@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Acked-by: Ard Biesheuvel <ardb@kernel.org>