arm64: added int_shr and int_sar
arm64: added int_shr and int_sar

riginding/dora,riginding/dora,riginding/dora,dinfuehr/dora,dinfuehr/dora,riginding/dora,riginding/dora,dinfuehr/dora,riginding/dora,dinfuehr/dora,riginding/dora,dinfuehr/dora,dinfuehr/dora