Add xf86OSInputThreadInit call from common layer into os-support layer

Allows os backends to run additional code as necessary to set up the
input thread.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
(cherry picked from commit ea1527a8a6)

hw/xfree86/common/xf86Init.c

@@ -1451,5 +1451,6 @@ ddxBeforeReset(void)
 void
 ddxInputThreadInit(void)
 {
+    xf86OSInputThreadInit();
 }
 #endif

hw/xfree86/os-support/bsd/bsd_init.c

@@ -661,3 +661,9 @@ xf86UseMsg()
     ErrorF("don't detach controlling tty (for debugging only)\n");
     return;
 }
+
+void
+xf86OSInputThreadInit()
+{
+    return;
+}

hw/xfree86/os-support/hurd/hurd_init.c

@@ -87,3 +87,9 @@ xf86CloseConsole()
     close(xf86Info.consoleFd);
     return;
 }
+
+void
+xf86OSInputThreadInit()
+{
+    return;
+}

hw/xfree86/os-support/linux/lnx_init.c

@@ -397,3 +397,9 @@ xf86UseMsg(void)
     ErrorF("don't detach controlling tty (for debugging only)\n");
     ErrorF("-masterfd <fd>         use the specified fd as the DRM master fd (not if setuid/gid)\n");
 }
+
+void
+xf86OSInputThreadInit()
+{
+    return;
+}

hw/xfree86/os-support/solaris/sun_vid.c

@@ -73,6 +73,12 @@ xf86OSInitVidMem(VidMemInfoPtr pVidMem)
 /* I/O Permissions section						   */
 /***************************************************************************/
 
+void
+xf86OSInputThreadInit()
+{
+    return;
+}
+
 Bool
 xf86EnableIO(void)
 {

hw/xfree86/os-support/xf86_OSproc.h

@@ -136,6 +136,7 @@ extern _X_EXPORT int xf86GetSerialModemState(int fd);
 extern _X_EXPORT int xf86SerialModemSetBits(int fd, int bits);
 extern _X_EXPORT int xf86SerialModemClearBits(int fd, int bits);
 extern _X_EXPORT int xf86LoadKernelModule(const char *pathname);
+extern _X_EXPORT void xf86OSInputThreadInit(void);
 
 /* AGP GART interface */