xserver-xorg: remove obsolete patch

This patch is forcing input to use SIGIO, despite the fact that since 2015
xserver has used an input thread.

(From OE-Core rev: cde11398e6d74ad8f27334199b4bd99cdf1f0ff7)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/xorg-xserver/xserver-xorg/0003-Remove-check-for-useSIGIO-option.patch

@@ -1,47 +0,0 @@
-From cf407b16cd65ad6e26a9c8e5984e163409a5c0f7 Mon Sep 17 00:00:00 2001
-From: Prabhu Sundararaj <prabhu.sundararaj@nxp.com>
-Date: Mon, 30 Jan 2017 16:32:06 -0600
-Subject: [PATCH] Remove check for useSIGIO option
-
-Commit 6a5a4e60373c1386b311b2a8bb666c32d68a9d99 removes the configure of useSIGIO
-option.
-
-As the xfree86 SIGIO support is reworked to use internal versions of OsBlockSIGIO
-and OsReleaseSIGIO.
-
-No longer the check for useSIGIO is needed
-
-Upstream-Status: Pending
-
-Signed-off-by: Prabhu Sundararaj <prabhu.sundararaj@nxp.com>
----
- hw/xfree86/os-support/shared/sigio.c | 6 ------
- 1 file changed, 6 deletions(-)
-
-diff --git a/hw/xfree86/os-support/shared/sigio.c b/hw/xfree86/os-support/shared/sigio.c
-index 884a71c..be76498 100644
---- a/hw/xfree86/os-support/shared/sigio.c
-+++ b/hw/xfree86/os-support/shared/sigio.c
-@@ -185,9 +185,6 @@ xf86InstallSIGIOHandler(int fd, void (*f) (int, void *), void *closure)
-     int i;
-     int installed = FALSE;
- 
--    if (!xf86Info.useSIGIO)
--        return 0;
--
-     for (i = 0; i < MAX_FUNCS; i++) {
-         if (!xf86SigIOFuncs[i].f) {
-             if (xf86IsPipe(fd))
-@@ -256,9 +253,6 @@ xf86RemoveSIGIOHandler(int fd)
-     int max;
-     int ret;
- 
--    if (!xf86Info.useSIGIO)
--        return 0;
--
-     max = 0;
-     ret = 0;
-     for (i = 0; i < MAX_FUNCS; i++) {
--- 
-2.7.4
-

meta/recipes-graphics/xorg-xserver/xserver-xorg_1.20.1.bb

@@ -1,7 +1,6 @@
 require xserver-xorg.inc
 
 SRC_URI += "file://musl-arm-inb-outb.patch \
-            file://0003-Remove-check-for-useSIGIO-option.patch \
             file://0001-xf86pciBus.c-use-Intel-ddx-only-for-pre-gen4-hardwar.patch \
             "
 SRC_URI[md5sum] = "e525846d1d0af5732ba835f2e2ec066d"