meta-selftest: add test for .patch file with long filename and without subject

(From OE-Core rev: 7c3e17f34c74e838990006aaf570df501aa2c167)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-selftest/recipes-test/devtool/devtool-test-long-filename.bb

@@ -0,0 +1,9 @@
+LICENSE = "CLOSED"
+INHIBIT_DEFAULT_DEPS = "1"
+
+SRC_URI = "file://${BPN}.tar.gz \
+           file://0001-I-ll-patch-you-only-if-devtool-lets-me-to-do-it-corr.patch"
+
+S = "${WORKDIR}/${BPN}"
+
+EXCLUDE_FROM_WORLD = "1"

meta-selftest/recipes-test/devtool/devtool-test-long-filename/0001-I-ll-patch-you-only-if-devtool-lets-me-to-do-it-corr.patch

@@ -0,0 +1,7 @@
+diff --git a/patch-me b/patch-me
+index a20b29a..5e35d1b 100644
+--- a/patch-me
++++ b/patch-me
+@@ -1 +1 @@
+-please
++NO

meta-selftest/recipes-test/devtool/devtool-test-long-filename/0001-I-ll-patch-you-only-if-devtool-lets-me-to-do-it-corr.patch.expected

@@ -0,0 +1,16 @@
+From 45ba3d107ea60777a6b6e134fd00fe5009749177 Mon Sep 17 00:00:00 2001
+From: Martin Jansa <Martin.Jansa@gmail.com>
+Date: Thu, 28 May 2020 02:03:39 +0200
+Subject: [PATCH] meta-selftest: add test for .patch file with long filename
+
+---
+ patch-me | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/patch-me b/patch-me
+index a20b29a..5e35d1b 100644
+--- a/patch-me
++++ b/patch-me
+@@ -1 +1 @@
+-please
++NO