Add an sh64 target to buildroot.

Config.in

@@ -33,7 +33,9 @@ config BR2_nios2
 config BR2_powerpc
 	bool "powerpc"
 config BR2_sh
-	bool "sh"
+	bool "superh"
+config BR2_sh64
+	bool "superh64"
 config BR2_sparc
 	bool "sparc"
 config BR2_x86_64
@@ -155,13 +157,15 @@ config BR2_ARCH
 	default "sh3eb"		if BR2_sh3eb
 	default "sh4"		if BR2_sh4
 	default "sh4eb"		if BR2_sh4eb
+	default "sh64"		if BR2_sh64
 	default "sparc"		if BR2_sparc
 	default "x86_64"	if BR2_x86_64
 
 config BR2_ENDIAN
 	string
 	default "LITTLE" if BR2_arm || BR2_cris || BR2_i386 || BR2_mipsel || \
-	                    BR2_sh3 || BR2_sh4 || BR2_x86_64 || BR2_nios2
+	                    BR2_sh3 || BR2_sh4 || BR2_x86_64 || BR2_nios2 || \
+			    BR2_sh64
 	default "BIG"    if BR2_alpha || BR2_armeb || BR2_m68k || BR2_mips || \
 	                    BR2_powerpc || BR2_sh2a_nofpueb || BR2_sh2eb || \
 	                    BR2_sh3eb || BR2_sh4eb || BR2_sparc