scripts/poky-qemu-internal: call stty sane before exit

When qemu is booted into console with -nographics
then after exiting the terminal line settings are messed
up. This patch calls stty sane to restore the terminal
settings to default.

stty is part of coreutils which is installed on all
host distros hence there is no need to warn about it
being available or not

(From OE-Core rev: 201a43cce6171988999f954a5759f46b330a7812)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/poky-qemu-internal

@@ -187,6 +187,9 @@ cleanup() {
         echo "poky-export-rootfs stop $ROOTFS"
         poky-export-rootfs stop $ROOTFS
     fi
+    # If QEMU crashes or somehow tty properties are not restored
+    # after qemu exits, we need to run stty sane
+    stty sane
 }
 
 n1=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
@@ -456,8 +459,7 @@ fi
 echo "Running $QEMU..."
 # -no-reboot is a mandatory option - see bug #100
 echo $QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT $SCRIPT_QEMU_EXTRA_OPT --append '"'$KERNCMDLINE $SCRIPT_KERNEL_OPT'"'
-# If QEMU crashes, we need to run stty sane
-$QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT $SCRIPT_QEMU_EXTRA_OPT --append "$KERNCMDLINE $SCRIPT_KERNEL_OPT" || stty sane
+$QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT $SCRIPT_QEMU_EXTRA_OPT --append "$KERNCMDLINE $SCRIPT_KERNEL_OPT"
 
 
 cleanup