arm: socfpga: Enable build for Arria 10

Update Kconfig and Makefile to enable Arria 10.
Clean up Makefile and sorting *.o alphanumerically.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
diff --git a/arch/arm/mach-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig
index f6e5773..2563e79 100644
--- a/arch/arm/mach-socfpga/Kconfig
+++ b/arch/arm/mach-socfpga/Kconfig
@@ -37,6 +37,9 @@
 	bool
 	select TARGET_SOCFPGA_GEN5
 
+config TARGET_SOCFPGA_ARRIA10
+	bool
+
 config TARGET_SOCFPGA_CYCLONE5
 	bool
 	select TARGET_SOCFPGA_GEN5
@@ -49,6 +52,10 @@
 	prompt "Altera SOCFPGA board select"
 	optional
 
+config TARGET_SOCFPGA_ARRIA10_SOCDK
+	bool "Altera SOCFPGA SoCDK (Arria 10)"
+	select TARGET_SOCFPGA_ARRIA10
+
 config TARGET_SOCFPGA_ARRIA5_SOCDK
 	bool "Altera SOCFPGA SoCDK (Arria V)"
 	select TARGET_SOCFPGA_ARRIA5
@@ -98,6 +105,7 @@
 
 config SYS_BOARD
 	default "arria5-socdk" if TARGET_SOCFPGA_ARRIA5_SOCDK
+	default "arria10-socdk" if TARGET_SOCFPGA_ARRIA10_SOCDK
 	default "cyclone5-socdk" if TARGET_SOCFPGA_CYCLONE5_SOCDK
 	default "de0-nano-soc" if TARGET_SOCFPGA_TERASIC_DE0_NANO
 	default "de1-soc" if TARGET_SOCFPGA_TERASIC_DE1_SOC
@@ -111,6 +119,7 @@
 
 config SYS_VENDOR
 	default "altera" if TARGET_SOCFPGA_ARRIA5_SOCDK
+	default "altera" if TARGET_SOCFPGA_ARRIA10_SOCDK
 	default "altera" if TARGET_SOCFPGA_CYCLONE5_SOCDK
 	default "aries" if TARGET_SOCFPGA_ARIES_MCVEVK
 	default "ebv" if TARGET_SOCFPGA_EBV_SOCRATES
@@ -125,6 +134,7 @@
 
 config SYS_CONFIG_NAME
 	default "socfpga_arria5_socdk" if TARGET_SOCFPGA_ARRIA5_SOCDK
+	default "socfpga_arria10_socdk" if TARGET_SOCFPGA_ARRIA10_SOCDK
 	default "socfpga_cyclone5_socdk" if TARGET_SOCFPGA_CYCLONE5_SOCDK
 	default "socfpga_de0_nano_soc" if TARGET_SOCFPGA_TERASIC_DE0_NANO
 	default "socfpga_de1_soc" if TARGET_SOCFPGA_TERASIC_DE1_SOC