sparc: merge CONFIG_SYS_CPU and CONFIG_SYS_VENDOR defines

For now, all the SPARC boards in U-Boot are provided by Gaisler.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Daniel Hellstrom <daniel@gaisler.com>
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 56bdae6..2df09b2 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -1,9 +1,6 @@
 menu "SPARC architecture"
 	depends on SPARC
 
-config SYS_ARCH
-	default "sparc"
-
 config LEON
 	bool
 
@@ -44,6 +41,16 @@
 
 endchoice
 
+config SYS_ARCH
+	default "sparc"
+
+config SYS_CPU
+	default "leon2" if LEON2
+	default "leon3" if LEON3
+
+config SYS_VENDOR
+	default "gaisler"
+
 source "board/gaisler/gr_cpci_ax2000/Kconfig"
 source "board/gaisler/gr_ep2s60/Kconfig"
 source "board/gaisler/gr_xc3s_1500/Kconfig"