sc_sps_1: Adjust board config to use 'mxs' SoC code

Fix build failure due the move of mx28 code to 'mxs' SoC.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/boards.cfg b/boards.cfg
index ef476d3..0837c16 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -182,7 +182,7 @@
 apx4devkit                   arm         arm926ejs   apx4devkit          bluegiga       mxs		apx4devkit
 m28evk                       arm         arm926ejs   m28evk              denx           mxs		m28evk
 mx28evk                      arm         arm926ejs   mx28evk             freescale      mxs		mx28evk
-sc_sps_1                     arm         arm926ejs   -                   schulercontrol mx28
+sc_sps_1                     arm         arm926ejs   sc_sps_1            schulercontrol mxs
 nhk8815                      arm         arm926ejs   nhk8815             st             nomadik
 nhk8815_onenand              arm         arm926ejs   nhk8815             st             nomadik       nhk8815:BOOT_ONENAND
 omap5912osk                  arm         arm926ejs   -                   ti             omap