[coreboot] PATCH: do not rely on "tempfile" being available

[Bernie Innocenti]

Signed-off-by: Bernie Innocenti

Build fix: add a fallback for systems where tempfile is missing

Index: bin/show-instructions.sh
===================================================================
--- bin/show-instructions.sh	(revision 261)
+++ bin/show-instructions.sh	(working copy)
@@ -1,6 +1,6 @@
 #!/bin/sh

-tmp=`tempfile`
+tmp=`tempfile 2>/dev/null || echo /tmp/show-instructions.$$`
 cat $1 | sed -e "s:%DESTFILE%:$2:" > $tmp

if [ -x `dirname $0`/../scripts/kconfig/lxdialog/lxdialog ]; then