Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"

As part of bringing the master branch back in to next, we need to allow
for all of these changes to exist here.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/mips/mach-mtmips/Kconfig b/arch/mips/mach-mtmips/Kconfig
index 15b2792..3fcd0b8 100644
--- a/arch/mips/mach-mtmips/Kconfig
+++ b/arch/mips/mach-mtmips/Kconfig
@@ -80,6 +80,7 @@
 	bool "MT7621"
 	select MIPS_CM
 	select MIPS_L2_CACHE
+	select MMC_SUPPORTS_TUNING
 	select SYS_CACHE_SHIFT_5
 	select SYS_MIPS_CACHE_INIT_RAM_LOAD
 	select PINCTRL_MT7621