LinuxKPI: Remove linux/sched.h include from linux/kernel.h header

This include prevents usage of any kernel.h helpers in sched.h and
all of dependencies. Linux does not have it too.
Fix building of kernel and drm-kmod after than.

Sponsored by:	Serenity CyberSecurity, LLC
MFC after:	1 week
Reviewed by:	manu, bz
Differential Revision:	https://reviews.freebsd.org/D45692

sys/compat/linuxkpi/common/include/linux/gpf.h

@@ -0,0 +1,33 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2024 Serenity Cyber Security, LLC.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _LINUXKPI_LINUX_GPF_H_
+#define	_LINUXKPI_LINUX_GPF_H_
+
+#include <linux/mmzone.h>
+
+#endif /* _LINUXKPI_LINUX_GPF_H_ */

sys/compat/linuxkpi/common/include/linux/idr.h

@@ -34,6 +34,7 @@
 #include <sys/limits.h>
 #include <sys/mutex.h>
 
+#include <linux/gpf.h>
 #include <linux/types.h>
 
 #define	IDR_BITS	5

sys/compat/linuxkpi/common/include/linux/kernel.h

@@ -50,7 +50,6 @@
 #include <linux/minmax.h>
 #include <linux/stringify.h>
 #include <linux/errno.h>
-#include <linux/sched.h>
 #include <linux/types.h>
 #include <linux/typecheck.h>
 #include <linux/jiffies.h>

sys/compat/linuxkpi/common/include/linux/scatterlist.h

@@ -32,8 +32,11 @@
 #define	_LINUXKPI_LINUX_SCATTERLIST_H_
 
 #include <sys/types.h>
+#include <sys/proc.h>
+#include <sys/sched.h>
 #include <sys/sf_buf.h>
 
+#include <linux/err.h>
 #include <linux/page.h>
 #include <linux/slab.h>
 #include <linux/mm.h>

sys/compat/linuxkpi/common/src/linux_rcu.c

@@ -41,6 +41,7 @@
 #include <ck_epoch.h>
 
 #include <linux/rcupdate.h>
+#include <linux/sched.h>
 #include <linux/srcu.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>