selftests: move watchdog tests from Documentation/watchdog

Remove watchdog-test from Makefile to move the test to selftests.

Add Makefile and .gitignore for watchdog-test. watchdog-test will
not be run as part of selftests suite and will not be included in
install targets.  It can be built separately for now.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
diff --git a/Documentation/watchdog/src/.gitignore b/Documentation/watchdog/src/.gitignore
index ac90997..ff0ebb5 100644
--- a/Documentation/watchdog/src/.gitignore
+++ b/Documentation/watchdog/src/.gitignore
@@ -1,2 +1 @@
 watchdog-simple
-watchdog-test
diff --git a/Documentation/watchdog/src/Makefile b/Documentation/watchdog/src/Makefile
index 4a892c3..47be791 100644
--- a/Documentation/watchdog/src/Makefile
+++ b/Documentation/watchdog/src/Makefile
@@ -1,5 +1,5 @@
 # List of programs to build
-hostprogs-y := watchdog-simple watchdog-test
+hostprogs-y := watchdog-simple
 
 # Tell kbuild to always build the programs
 always := $(hostprogs-y)
diff --git a/tools/testing/selftests/watchdog/.gitignore b/tools/testing/selftests/watchdog/.gitignore
new file mode 100644
index 0000000..5aac5157
--- /dev/null
+++ b/tools/testing/selftests/watchdog/.gitignore
@@ -0,0 +1 @@
+watchdog-test
diff --git a/tools/testing/selftests/watchdog/Makefile b/tools/testing/selftests/watchdog/Makefile
new file mode 100644
index 0000000..f863c66
--- /dev/null
+++ b/tools/testing/selftests/watchdog/Makefile
@@ -0,0 +1,8 @@
+TEST_PROGS := watchdog-test
+
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+clean:
+	rm -fr $(TEST_PROGS)
diff --git a/Documentation/watchdog/src/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c
similarity index 100%
rename from Documentation/watchdog/src/watchdog-test.c
rename to tools/testing/selftests/watchdog/watchdog-test.c