s390/asm-offsets: Include ftrace_regs.h instead of ftrace.h

Reduce header dependencies by including ftrace_regs.h and ptrace.h,
which does not include other header files, instead of ftrace.h which
pulls in various other header files.

This is sufficient for __FTRACE_REGS_PT_REGS and __FTRACE_REGS_SIZE.

Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

Author: hcahca

arch/s390/kernel/asm-offsets.c

@@ -11,9 +11,10 @@
 #include <linux/sched.h>
 #include <linux/purgatory.h>
 #include <linux/pgtable.h>
-#include <linux/ftrace.h>
+#include <linux/ftrace_regs.h>
 #include <asm/kvm_host_types.h>
 #include <asm/stacktrace.h>
+#include <asm/ptrace.h>
 
 int main(void)
 {