util/kconfig: Rewrite patch in quilt's normal form

This is what quilt writes on `quilt refresh` and what it can apply and
unapply cleanly.

Change-Id: I8c8586da384b65fd5c21c1c1a093642534f83283
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57878
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

util/kconfig/patches/0013-util-kconfig-detect-ncurses-on-FreeBSD.patch

@@ -9,11 +9,11 @@ Change-Id: I4344ba2116c0b8618357db4248d993509cbb666e
  util/kconfig/mconf-cfg.sh | 6 ++++++
  1 file changed, 6 insertions(+)
 
-diff --git a/util/kconfig/mconf-cfg.sh b/util/kconfig/mconf-cfg.sh
-index b520e407a8..2047e626b4 100755
---- a/util/kconfig/mconf-cfg.sh
-+++ b/util/kconfig/mconf-cfg.sh
-@@ -33,6 +33,12 @@ if [ -f /usr/include/ncurses/ncurses.h ]; then
+Index: kconfig/mconf-cfg.sh
+===================================================================
+--- kconfig.orig/mconf-cfg.sh
++++ kconfig/mconf-cfg.sh
+@@ -33,6 +33,12 @@ if [ -f /usr/include/ncurses/ncurses.h ]
  	exit 0
  fi
  
@@ -26,6 +26,3 @@ index b520e407a8..2047e626b4 100755
  # As a final fallback before giving up, check if $HOSTCC knows of a default
  # ncurses installation (e.g. from a vendor-specific sysroot).
  if echo '#include <ncurses.h>' | ${HOSTCC} -E - >/dev/null 2>&1; then
--- 
-2.31.1
-