snp.sh Fix for SNP launch guest memory issue on 6.11-rc3 host

qemu option roms are no longer supported from kerenel 6.11-rc3,
so updated qemu command options to add romfile to the guest storage controller (virtio-scsi), and modify guest video graphic controllerto none

Signed-off-by: Harika Nittala <lnittala@amd.com>

tools/snp.sh

@@ -585,7 +585,7 @@ build_base_qemu_cmdline() {
   add_qemu_cmdline_opts "-smp ${GUEST_SMP}"
   add_qemu_cmdline_opts "-m ${GUEST_MEM_SIZE_MB}M"
   add_qemu_cmdline_opts "-no-reboot"
-  add_qemu_cmdline_opts "-vga std"
+  add_qemu_cmdline_opts "-vga none"
   add_qemu_cmdline_opts "-monitor pty"
   add_qemu_cmdline_opts "-daemonize"
 
@@ -594,7 +594,7 @@ build_base_qemu_cmdline() {
   add_qemu_cmdline_opts "-device virtio-net-pci,disable-legacy=on,iommu_platform=true,netdev=vmnic,romfile="
 
   # Storage
-  add_qemu_cmdline_opts "-device virtio-scsi-pci,id=scsi0,disable-legacy=on,iommu_platform=true"
+  add_qemu_cmdline_opts "-device virtio-scsi-pci,id=scsi0,disable-legacy=on,iommu_platform=true,romfile="
   add_qemu_cmdline_opts "-device scsi-hd,drive=disk0"
   add_qemu_cmdline_opts "-drive if=none,id=disk0,format=qcow2,file=${IMAGE}"