packagegroup-fsl: Install gplay for mx28 boards

gplay is a generic player deployed by Freescale

Change-Id: I428a800d0ecb06a09721ad8b17bf1c210c44c4af
Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>
packagegroup-fsl: Add mtd-utils to test package

Add mtd-utils and mtd-utils-ubifs

Change-Id: I2a0e84c347dbb2f20102fb30f1b42bb624c3f067
Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>