Raname solidcard3 into sc3; add redundant env for sc3
diff --git a/Makefile b/Makefile
index 01349f1..3e12982 100644
--- a/Makefile
+++ b/Makefile
@@ -1200,8 +1200,8 @@
@echo "TEXT_BASE = 0x01000000" > $(obj)board/amcc/sequoia/config.tmp
@echo "CONFIG_NAND_U_BOOT = y" >> $(obj)include/config.mk
-solidcard3_config:unconfig
- @./mkconfig $(@:_config=) ppc ppc4xx solidcard3
+sc3_config:unconfig
+ @./mkconfig $(@:_config=) ppc ppc4xx sc3
sycamore_config: unconfig
@echo "Configuring for sycamore board as subset of walnut..."