ARM: socfpga: do not add board directory to header search path

The compiler option "-Iboard/$(VENDOR)/$(BOARD)" just exists here
for iocsr_config.c to be able to include iocsr_config.h.

Use "..." instead of <...> to include a header in the same directory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/board/altera/socfpga/iocsr_config.c b/board/altera/socfpga/iocsr_config.c
index c79aa6d..3b202b5 100644
--- a/board/altera/socfpga/iocsr_config.c
+++ b/board/altera/socfpga/iocsr_config.c
@@ -6,7 +6,7 @@
 
 /* This file is generated by Preloader Generator */
 
-#include <iocsr_config.h>
+#include "iocsr_config.h"
 
 #ifdef CONFIG_TARGET_SOCFPGA_CYCLONE5
 const unsigned long iocsr_scan_chain0_table[((