arm64: Use generic Layerscape SoC family naming

Freescale will be a spinning-out a set of ARMv8 based SoCs which
will be based on a similar overall SoC architecture. So, this patch
converts the existing infrastructure in the arm64/dts, arm64/Kconfig
and arm64/configs to use the generic convention ARCH_LAYERSCAPE
in place of the more specific FSL_LS2085A, to save code duplication
later-on.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 36303c8..8aba80a 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -28,10 +28,10 @@
 	help
 	  This enables support for Samsung Exynos7 SoC family
 
-config ARCH_FSL_LS2085A
-	bool "Freescale LS2085A SOC"
+config ARCH_LAYERSCAPE
+	bool "ARMv8 based Freescale Layerscape SoC family"
 	help
-	  This enables support for Freescale LS2085A SOC.
+	  This enables support for the Freescale Layerscape SoC family.
 
 config ARCH_HISI
 	bool "Hisilicon SoC Family"