cpu: assume SSE if SSE2 is selected

If the SSE2 Kconfig option is selected also select SSE.

Change-Id: I6ccba57d5ae13b8066f2f744cd739282ffd4fe73
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/20245
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/cpu/Kconfig

@@ -65,6 +65,7 @@ config SSE
 config SSE2
 	bool
 	default n
+	select SSE
 	help
 	  Select SSE2 in your socket or model Kconfig if your CPU has SSE2
 	  streaming SIMD instructions. Some parts of coreboot can be built