docs: Add more manuals to the PDF build

There were a few manuals that weren't being built in PDF format, but
there's no reason not to...
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/conf.py

@@ -342,6 +342,10 @@ if major == 1 and minor > 3:
 latex_documents = [
     ('admin-guide/index', 'linux-user.tex', 'Linux Kernel User Documentation',
      'The kernel development community', 'manual'),
+    ('core-api/index', 'core-api.tex', 'The kernel core API manual',
+     'The kernel development community', 'manual'),
+    ('driver-api/index', 'driver-api.tex', 'The kernel driver API manual',
+     'The kernel development community', 'manual'),
     ('kernel-documentation', 'kernel-documentation.tex', 'The Linux Kernel Documentation',
      'The kernel development community', 'manual'),
     ('process/index', 'development-process.tex', 'Linux Kernel Development Documentation',
@@ -350,6 +354,8 @@ latex_documents = [
      'The kernel development community', 'manual'),
     ('media/index', 'media.tex', 'Linux Media Subsystem Documentation',
      'The kernel development community', 'manual'),
+    ('security/index', 'security.tex', 'The kernel security subsystem manual',
+     'The kernel development community', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of

Documentation/core-api/conf.py

@@ -3,3 +3,8 @@
 project = "Core-API Documentation"
 
 tags.add("subproject")
+
+latex_documents = [
+    ('index', 'core-api.tex', project,
+     'The kernel development community', 'manual'),
+]

Documentation/security/conf.py

+project = "The kernel security subsystem manual"
+
+tags.add("subproject")
+
+latex_documents = [
+    ('index', 'security.tex', project,
+     'The kernel development community', 'manual'),
+]