package/freescale-imx/imx-vpuwrap: don't override dependencies

Don't override IMX_VPUWRAP_DEPENDENCIES in a conditional

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[yann.morin.1998@free.fr: keep multi-line conditional blocks]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 8e86c81418f681bce5d6507ee016d7786e048af0)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/freescale-imx/imx-vpuwrap/imx-vpuwrap.mk

@@ -10,11 +10,11 @@ IMX_VPUWRAP_SOURCE = imx-vpuwrap-$(IMX_VPUWRAP_VERSION).bin
 IMX_VPUWRAP_INSTALL_STAGING = YES
 
 ifeq ($(BR2_PACKAGE_IMX_VPU),y)
-IMX_VPUWRAP_DEPENDENCIES = imx-vpu
+IMX_VPUWRAP_DEPENDENCIES += imx-vpu
 endif
 
 ifeq ($(BR2_PACKAGE_IMX_VPU_HANTRO),y)
-IMX_VPUWRAP_DEPENDENCIES = imx-vpu-hantro
+IMX_VPUWRAP_DEPENDENCIES += imx-vpu-hantro
 endif
 
 IMX_VPUWRAP_LICENSE = NXP Semiconductor Software License Agreement