Add license rule for linux-syscall note

Signed-off-by: Ayan Sinha Mahapatra <[email protected]>

Author: AyanSinhaMahapatra

src/licensedcode/data/rules/linux-syscall-exception-gpl_7.RULE

@@ -0,0 +1,14 @@
+---
+license_expression: linux-syscall-exception-gpl
+is_license_notice: yes
+notes: seen in linux kernel /LICENSES/exceptions/Linux-syscall-note
+---
+
+SPDX-Licenses: GPL-2.0, GPL-2.0+, GPL-1.0+, LGPL-2.0, LGPL-2.0+, LGPL-2.1, LGPL-2.1+, GPL-2.0-only, GPL-2.0-or-later
+Usage-Guide:
+  This exception is used together with one of the above SPDX-Licenses
+  to mark user space API (uapi) header files so they can be included
+  into non GPL compliant user space application code.
+  To use this exception add it with the keyword WITH to one of the
+  identifiers in the SPDX-Licenses tag:
+    {{SPDX-License-Identifier: <SPDX-License> WITH Linux-syscall-note}}