drm: Replace HTTP links with HTTPS ones

Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200719171428.60470-1-grandmaster@al2klimov.de

Documentation/gpu/vgaarbiter.rst

@@ -185,7 +185,7 @@ enhancing the kernel code to adapt as a kernel module and also did the
 implementation of the user space side [3]. Now (2009) Tiago Vignatti and Dave
 Airlie finally put this work in shape and queued to Jesse Barnes' PCI tree.
 
-0) http://cgit.freedesktop.org/xorg/xserver/commit/?id=4b42448a2388d40f257774fbffdccaea87bd0347
-1) http://lists.freedesktop.org/archives/xorg/2005-March/006663.html
-2) http://lists.freedesktop.org/archives/xorg/2005-March/006745.html
-3) http://lists.freedesktop.org/archives/xorg/2007-October/029507.html
+0) https://cgit.freedesktop.org/xorg/xserver/commit/?id=4b42448a2388d40f257774fbffdccaea87bd0347
+1) https://lists.freedesktop.org/archives/xorg/2005-March/006663.html
+2) https://lists.freedesktop.org/archives/xorg/2005-March/006745.html
+3) https://lists.freedesktop.org/archives/xorg/2007-October/029507.html

drivers/gpu/drm/drm_modes.c

@@ -548,7 +548,7 @@ EXPORT_SYMBOL(drm_gtf_mode_complex);
  * Generalized Timing Formula is derived from:
  *
  *	GTF Spreadsheet by Andy Morrish (1/5/97)
- *	available at http://www.vesa.org
+ *	available at https://www.vesa.org
  *
  * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c.
  * What I have done is to translate it by using integer calculation.

include/uapi/drm/drm_mode.h

@@ -497,7 +497,7 @@ struct drm_mode_fb_cmd2 {
 	 * In case of planar formats, this ioctl allows up to 4
 	 * buffer objects with offsets and pitches per plane.
 	 * The pitch and offset order is dictated by the fourcc,
-	 * e.g. NV12 (http://fourcc.org/yuv.php#NV12) is described as:
+	 * e.g. NV12 (https://fourcc.org/yuv.php#NV12) is described as:
 	 *
 	 *   YUV 4:2:0 image with a plane of 8 bit Y samples
 	 *   followed by an interleaved U/V plane containing