ARM: spear: Remove references to PLAT_SPEAR_SINGLE

The Kconfig symbol PLAT_SPEAR_SINGLE briefly appeared during the v3.10
development cycle. It was removed in a merge commit before v3.10. A few
references to it were left in the tree, probably because they didn't
generate merge conflicts. Whatever it was, they're useless now and can
safely be removed.
Reported-by: Martin Walch <walch.martin@web.de>
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Reviewed-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Cc: Rajeev Kumar <rajeev_kumar@mentor.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-spear/Kconfig

@@ -4,7 +4,6 @@
 
 menuconfig PLAT_SPEAR
 	bool "ST SPEAr Family" if ARCH_MULTI_V7 || ARCH_MULTI_V5
-	default PLAT_SPEAR_SINGLE
 	select ARCH_REQUIRE_GPIOLIB
 	select ARM_AMBA
 	select CLKSRC_MMIO
@@ -13,7 +12,7 @@ if PLAT_SPEAR
 
 config ARCH_SPEAR13XX
 	bool "ST SPEAr13xx"
-	depends on ARCH_MULTI_V7 || PLAT_SPEAR_SINGLE
+	depends on ARCH_MULTI_V7
 	select ARM_GIC
 	select GPIO_SPEAR_SPICS
 	select HAVE_ARM_SCU if SMP
@@ -44,7 +43,7 @@ endif #ARCH_SPEAR13XX
 
 config ARCH_SPEAR3XX
 	bool "ST SPEAr3xx"
-	depends on ARCH_MULTI_V5 || PLAT_SPEAR_SINGLE
+	depends on ARCH_MULTI_V5
 	depends on !ARCH_SPEAR13XX
 	select ARM_VIC
 	select PINCTRL
@@ -75,7 +74,7 @@ endif
 
 config ARCH_SPEAR6XX
 	bool "ST SPEAr6XX"
-	depends on ARCH_MULTI_V5 || PLAT_SPEAR_SINGLE
+	depends on ARCH_MULTI_V5
 	depends on !ARCH_SPEAR13XX
 	select ARM_VIC
 	help
@@ -88,7 +87,7 @@ config MACH_SPEAR600
 	  Supports ST SPEAr600 boards configured via the device-tree
 
 config ARCH_SPEAR_AUTO
-	def_bool PLAT_SPEAR_SINGLE
+	bool
 	depends on !ARCH_SPEAR13XX && !ARCH_SPEAR6XX
 	select ARCH_SPEAR3XX