Blackfin: update tiny board settings (voltage/default env)

The tinyboards like to run at a little lower voltage than the default, and
they prefer to boot over the network.  For the latter, extend the common
code a little to make this easier.

Also fix the cm-bf527 env sector size while we're in here to reflect the
flash that is actually in use.

Signed-off-by: Harald Krapfenbauer <Harald.Krapfenbauer@bluetechnix.at>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/configs/bfin_adi_common.h b/include/configs/bfin_adi_common.h
index 0fbd8f4..3fc0fa0 100644
--- a/include/configs/bfin_adi_common.h
+++ b/include/configs/bfin_adi_common.h
@@ -127,6 +127,9 @@
 #ifndef CONFIG_BOOTARGS_ROOT
 # define CONFIG_BOOTARGS_ROOT "/dev/mtdblock0 rw"
 #endif
+#ifndef FLASHBOOT_ENV_SETTINGS
+# define FLASHBOOT_ENV_SETTINGS "flashboot=bootm 0x20100000\0"
+#endif
 #define CONFIG_BOOTARGS	\
 	"root=" CONFIG_BOOTARGS_ROOT " " \
 	"clkin_hz=" MK_STR(CONFIG_CLKIN_HZ) " " \
@@ -211,7 +214,7 @@
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	NAND_ENV_SETTINGS \
 	NETWORK_ENV_SETTINGS \
-	"flashboot=bootm 0x20100000\0"
+	FLASHBOOT_ENV_SETTINGS
 
 /*
  * Network Settings