siemens: cosmetic: rename project_dir

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Wolfgang Denk <wd@denx.de>

include/configs/siemens-am33x-common.h

@@ -358,7 +358,7 @@
 
 #define CONFIG_COMMON_ENV_SETTINGS \
 	"verify=no \0" \
-	"project_dir=systemone\0" \
+	"project_dir=targetdir\0" \
 	"upgrade_available=0\0" \
 	"altbootcmd=run bootcmd\0" \
 	"bootlimit=3\0" \