fs/ext2: simplify code

No option is conditional anymore, so just collate them into a single
assignment.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

fs/ext2/ext2.mk

@@ -4,22 +4,19 @@
 #
 ################################################################################
 
-EXT2_OPTS = -G $(BR2_TARGET_ROOTFS_EXT2_GEN) -R $(BR2_TARGET_ROOTFS_EXT2_REV)
-
-EXT2_OPTS += -b $(BR2_TARGET_ROOTFS_EXT2_BLOCKS)
-
-EXT2_OPTS += -i $(BR2_TARGET_ROOTFS_EXT2_INODES)
-
-EXT2_OPTS += -I $(BR2_TARGET_ROOTFS_EXT2_EXTRA_INODES)
-
-EXT2_OPTS += -r $(BR2_TARGET_ROOTFS_EXT2_RESBLKS)
-
 # qstrip results in stripping consecutive spaces into a single one. So the
 # variable is not qstrip-ed to preserve the integrity of the string value.
 EXT2_LABEL := $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
 #" Syntax highlighting... :-/ )
 
-EXT2_OPTS += -l "$(EXT2_LABEL)"
+EXT2_OPTS = \
+	-G $(BR2_TARGET_ROOTFS_EXT2_GEN) \
+	-R $(BR2_TARGET_ROOTFS_EXT2_REV) \
+	-b $(BR2_TARGET_ROOTFS_EXT2_BLOCKS) \
+	-i $(BR2_TARGET_ROOTFS_EXT2_INODES) \
+	-I $(BR2_TARGET_ROOTFS_EXT2_EXTRA_INODES) \
+	-r $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \
+	-l "$(EXT2_LABEL)"
 
 ROOTFS_EXT2_DEPENDENCIES = host-mke2img