Blackfin arch: use "char bfin_board_name[]" rather than "char *bfin_board_name" per discussion on lkml as the former uses less storage

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/arch/blackfin/mach-bf548/boards/ezkit.c b/arch/blackfin/mach-bf548/boards/ezkit.c
index 046e6d8..f5428a5 100644
--- a/arch/blackfin/mach-bf548/boards/ezkit.c
+++ b/arch/blackfin/mach-bf548/boards/ezkit.c
@@ -49,7 +49,7 @@
 /*
  * Name the Board for the /proc/cpuinfo
  */
-char *bfin_board_name = "ADSP-BF548-EZKIT";
+const char bfin_board_name[] = "ADSP-BF548-EZKIT";
 
 /*
  *  Driver needs to know address, irq and flag pin.