configs/imx6q-sabresd-qt5: Increase the rootfs size

The QT5 rootfs requires more space, so adjust it a larger size.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

configs/imx6q-sabresd_qt5_defconfig

@@ -23,7 +23,7 @@ BR2_PACKAGE_HOST_MTOOLS=y
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/freescale/common/imx/post-image.sh"
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
+BR2_TARGET_ROOTFS_EXT2_SIZE="320M"
 BR2_ROOTFS_OVERLAY="board/freescale/imx6-sabresd/rootfs_overlay"
 
 # Bootloader