ARM: socfpga: Correct SCU virtual mapping in socfpga

Correct SCU virtual mapping that was causing this BUG message:

"BUG: mapping for 0xfffec000 at 0xfffec000 out of vmalloc space"
Signed-off-by: NVince Bridgers <vbridger@opensource.altera.com>
Signed-off-by: NDinh Nguyen <dinguyen@opensource.altera.com>

arch/arm/mach-socfpga/core.h

@@ -45,6 +45,6 @@ extern char secondary_trampoline, secondary_trampoline_end;
 
 extern unsigned long socfpga_cpu1start_addr;
 
-#define SOCFPGA_SCU_VIRT_BASE   0xfffec000
+#define SOCFPGA_SCU_VIRT_BASE   0xfee00000
 
 #endif