Merge 4.15-rc6 into staging-next

Documentation/admin-guide/kernel-parameters.rst

Documentation/admin-guide/kernel-parameters.txt

Documentation/admin-guide/thunderbolt.rst

Documentation/devicetree/bindings/mtd/jedec,spi-nor.txt

Documentation/devicetree/bindings/sound/da7218.txt

Documentation/devicetree/bindings/sound/da7219.txt

Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt

Documentation/x86/x86_64/mm.txt

MAINTAINERS

Makefile

arch/arm/lib/csumpartialcopyuser.S

arch/arm64/kvm/hyp/debug-sr.c

arch/parisc/boot/compressed/misc.c

arch/parisc/include/asm/thread_info.h

arch/parisc/kernel/entry.S

arch/parisc/kernel/hpmc.S

arch/parisc/kernel/unwind.c

arch/parisc/lib/delay.c

arch/powerpc/include/asm/mmu_context.h

arch/powerpc/kernel/process.c