Two new breakages since Thursday

[Russell King - ARM Linux]

Two new breakages have appeared since Thursday.  The first affects both
ARM and ARM64 builds (a missing file), the second only ARM builds.

arch/arm64/boot/dts/mediatek/mt8173-pinfunc.h:18:40: fatal error: dt-bindings/pinctrl/mt65xx.h: No such file or directory
arch/arm/boot/dts/mt8135-pinfunc.h:18:40: fatal error: dt-bindings/pinctrl/mt65xx.h: No such file or directory
arch/arm/mach-at91/pm_suspend.S:143: Error: selected processor does not support ARM mode `dsb'

ARM64 breaks on a defconfig build, ARM breaks with these errors on
an allmodconfig build.

The first two are due to the mediatek patches merged via the arm-soc
tree.  The second is due to:

commit 20567658b8f010eea287087bfdbeb25757801aed
Author: Wenyou Yang <wenyou.yang at atmel.com>
Date:   Mon Mar 9 11:53:46 2015 +0800

    ARM: at91/pm_suspend: add the WFI instruction support for ARMv7

which looks to me like completely the wrong solution:

+       .macro at91_cpu_idle
+
+#if defined(CONFIG_CPU_V7)
+       mov     tmp1, #AT91_PMC_PCK
+       str     tmp1, [pmc, #AT91_PMC_SCDR]
+
+       dsb
+
+       wfi             @ Wait For Interrupt
+#else
+       mcr     p15, 0, tmp1, c7, c0, 4
+#endif
+
+       .endm

So, if we build a kernel with ARMc6 and ARMv7 CPUs, AT91 ends up using
ARMv7-only instructions in this function, which will cause an illegal
instruction exception on ARMv6 CPUs.

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