ARM: 8979/1: Remove redundant ARCH_SPARSEMEM_DEFAULT setting

If ARCH_SPARSEMEM_ENABLE=y and ARCH_{FLATMEM,DISCONTIGMEM}_ENABLE=n,
then the logic in mm/Kconfig already makes CONFIG_SPARSEMEM the only
choice.  This is true for all of the existing ARM users of
ARCH_SPARSEMEM_ENABLE.

Forcing ARCH_SPARSEMEM_DEFAULT=y if ARCH_SPARSEMEM_ENABLE=y prevents
us from ever defaulting to FLATMEM, so we should remove this setting.

Link: https://lkml.org/lkml/2015/6/4/757

Signed-off-by: Kevin Cernekee <[email protected]>
Tested-by: Stephen Boyd <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Gregory Fong <[email protected]>
Signed-off-by: Doug Berger <[email protected]>
Signed-off-by: Florian Fainelli <[email protected]>
Signed-off-by: Mike Rapoport <[email protected]>
Signed-off-by: Russell King <[email protected]>

Author: cernekee

arch/arm/Kconfig

@@ -1519,9 +1519,6 @@ config ARCH_SPARSEMEM_ENABLE
 	bool
 	select SPARSEMEM_STATIC
 
-config ARCH_SPARSEMEM_DEFAULT
-	def_bool ARCH_SPARSEMEM_ENABLE
-
 config HAVE_ARCH_PFN_VALID
 	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM