treewide: Convert CONFIG_HOSTNAME to a string option
CONFIG_HOSTNAME is defined as a "plain" preprocessor string, but every
use is couched by __stringify(...).
Hence, convert it to a proper string option.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/include/configs/platinum_picon.h b/include/configs/platinum_picon.h
index 2031554..148e561 100644
--- a/include/configs/platinum_picon.h
+++ b/include/configs/platinum_picon.h
@@ -16,7 +16,7 @@
#define CONFIG_FEC_XCV_TYPE RMII
#define CONFIG_FEC_MXC_PHYADDR 0
-#define CONFIG_HOSTNAME picon
+#define CONFIG_HOSTNAME "picon"
#define CONFIG_PLATFORM_ENV_SETTINGS "\0"