system: set default PATH according to BR2_ROOTFS_MERGED_USR

Use "/usr/bin:/usr/sbin" as the default path if BR2_ROOTFS_MERGED_USR
is enabled, otherwise use "/bin:/sbin:/usr/bin:/usr/sbin".

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

system/Config.in

@@ -402,7 +402,8 @@ endif # BR2_ROOTFS_SKELETON_DEFAULT
 
 config BR2_SYSTEM_DEFAULT_PATH
 	string "Set the system's default PATH"
-	default "/bin:/sbin:/usr/bin:/usr/sbin"
+	default "/usr/bin:/usr/sbin" if BR2_ROOTFS_MERGED_USR
+	default "/bin:/sbin:/usr/bin:/usr/sbin" if !BR2_ROOTFS_MERGED_USR
 	help
 	  Sets the system's default PATH. It is being used in
 	  /etc/profile in the skeleton-init-common package and by some