qemu_v8: Use -cpu max to support additional AArch64 features

-cpu max provides support of maximum feature set available with
AArch64 architecture.This includes FEAT_PAuth and FEAT_BTI.

Additionally sve is turned off as linux fails to boot with sve=on
when -cpu max is enabled.

Signed-off-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Jerome Forissier <jerome@forissier.org>
diff --git a/qemu_v8.mk b/qemu_v8.mk
index 4cb485f..4abe868 100644
--- a/qemu_v8.mk
+++ b/qemu_v8.mk
@@ -411,7 +411,7 @@
 		-serial tcp:localhost:54320 -serial tcp:localhost:54321 \
 		-smp $(QEMU_SMP) \
 		-s -S -machine virt,secure=on,gic-version=$(QEMU_GIC_VERSION),virtualization=$(QEMU_VIRT) \
-		-cpu cortex-a57 \
+		-cpu max,sve=off \
 		-d unimp -semihosting-config enable=on,target=native \
 		-m $(QEMU_MEM) \
 		-bios bl1.bin		\