media: add SPDX headers on Kconfig and Makefile files

Most of media Kconfig/Makefile files already has SPDX,
but there are a few ones still missing. Add it to them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/dvb-frontends/Kconfig

+# SPDX-License-Identifier: GPL-2.0
+
 if MEDIA_DIGITAL_TV_SUPPORT
 
 comment "DVB Frontend drivers hidden by 'Autoselect ancillary drivers'"

drivers/media/mc/Kconfig

+# SPDX-License-Identifier: GPL-2.0
+
 #
 # Media controller
 #	Selectable only for webcam/grabbers, as other drivers don't use it

drivers/media/platform/sunxi/Kconfig

+# SPDX-License-Identifier: GPL-2.0
+
 source "drivers/media/platform/sunxi/sun4i-csi/Kconfig"
 source "drivers/media/platform/sunxi/sun6i-csi/Kconfig"

drivers/media/platform/sunxi/Makefile

+# SPDX-License-Identifier: GPL-2.0
+
 obj-y		+= sun4i-csi/
 obj-y		+= sun6i-csi/
 obj-y		+= sun8i-di/

drivers/media/platform/sunxi/sun4i-csi/Kconfig

+# SPDX-License-Identifier: GPL-2.0
+
 config VIDEO_SUN4I_CSI
 	tristate "Allwinner A10 CMOS Sensor Interface Support"
 	depends on VIDEO_V4L2 && COMMON_CLK && VIDEO_V4L2_SUBDEV_API && HAS_DMA

drivers/media/platform/sunxi/sun4i-csi/Makefile

+# SPDX-License-Identifier: GPL-2.0
+
 sun4i-csi-y += sun4i_csi.o
 sun4i-csi-y += sun4i_dma.o
 sun4i-csi-y += sun4i_v4l2.o

drivers/staging/media/hantro/Makefile

+# SPDX-License-Identifier: GPL-2.0
+
 obj-$(CONFIG_VIDEO_HANTRO) += hantro-vpu.o
 
 hantro-vpu-y += \

drivers/staging/media/rkisp1/Makefile

+# SPDX-License-Identifier: GPL-2.0
+
 obj-$(CONFIG_VIDEO_ROCKCHIP_ISP1) += rockchip-isp1.o
 rockchip-isp1-objs += 	rkisp1-capture.o \
 			rkisp1-common.o \