The linux console code is inconsistent: most console= lines accept
/dev/name but for some reason powerpc's hvc driver does not.
diff --git a/scripts/mkroot.sh b/scripts/mkroot.sh
index 0953f41..d51f251 100755
--- a/scripts/mkroot.sh
+++ b/scripts/mkroot.sh
@@ -180,7 +180,7 @@
     KARCH=powerpc QEMU="ppc -M g3beige" KARGS=ttyS0 VMLINUX=vmlinux
     KCONF=ALTIVEC,PPC_PMAC,PPC_OF_BOOT_TRAMPOLINE,IDE,IDE_GD,IDE_GD_ATA,BLK_DEV_IDE_PMAC,BLK_DEV_IDE_PMAC_ATA100FIRST,MACINTOSH_DRIVERS,ADB,ADB_CUDA,NET_VENDOR_NATSEMI,NET_VENDOR_8390,NE2K_PCI,SERIO,SERIAL_PMACZILOG,SERIAL_PMACZILOG_TTYS,SERIAL_PMACZILOG_CONSOLE,BOOTX_TEXT
   elif [ "$TARGET" == powerpc64le ]; then
-    KARCH=powerpc QEMU="ppc64 -M pseries -vga none" KARGS=/dev/hvc0
+    KARCH=powerpc QEMU="ppc64 -M pseries -vga none" KARGS=hvc0
     VMLINUX=vmlinux
     KCONF=PPC64,PPC_PSERIES,CPU_LITTLE_ENDIAN,PPC_OF_BOOT_TRAMPOLINE,BLK_DEV_SD,SCSI_LOWLEVEL,SCSI_IBMVSCSI,ATA,NET_VENDOR_IBM,IBMVETH,HVC_CONSOLE,PPC_TRANSACTIONAL_MEM,PPC_DISABLE_WERROR,SECTION_MISMATCH_WARN_ONLY
   elif [ "$TARGET" = s390x ]; then