Merge tag 'xtensa-20190307' of git://github.com/jcmvbkbc/linux-xtensa

Pull xtensa updates from Max Filippov:

 - use generic spinlock/rwlock implementations

 - clean up IPI processing

 - document boot parameters passing to the kernel

 - fix get_wchan

 - various cleanups in time.c, process.c, traps.c and thread_info.h

* tag 'xtensa-20190307' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: simplify trap_init
  xtensa: drop unused definitions
  xtensa: fix get_wchan
  xtensa: use generic spinlock/rwlock implementation
  xtensa: provide xchg for sizes 1 and 2
  xtensa: clean up arch/xtensa/kernel/time.c
  xtensa: SMP: rework IPI processing
  xtensa: document boot parameter passing

diff --cc arch/xtensa/Kconfig
Simple merge

diff --cc arch/xtensa/include/asm/Kbuild
index 809f39ce08c0779c5cd2b2b9d13c3f62ebaf6817,27bd3d33b0102beb1872a130ea1aa8f0f63c6aa0..d939e13e8d846fe5d1a24f4948caae1ff798a36a
--- 1/arch/xtensa/include/asm/Kbuild
--- 2/arch/xtensa/include/asm/Kbuild
+++ b/arch/xtensa/include/asm/Kbuild
@@@ -23,9 -23,10 +23,11 @@@ generic-y += mm-arch-hooks.
  generic-y += param.h
  generic-y += percpu.h
  generic-y += preempt.h
+ generic-y += qrwlock.h
+ generic-y += qspinlock.h
  generic-y += rwsem.h
  generic-y += sections.h
 +generic-y += socket.h
  generic-y += topology.h
  generic-y += trace_clock.h
  generic-y += vga.h