media: chips-media: wave5: Requires GENERIC_ALLOCATOR

This driver uses the API that is provided by GENERIC_ALLOCATOR API, so
select it to prevent build errors:

riscv32-linux-ld: drivers/media/platform/chips-media/wave5/wave5-vpu.o: in function `.L37':
wave5-vpu.c:(.text+0x468): undefined reference to `of_gen_pool_get'
riscv32-linux-ld: drivers/media/platform/chips-media/wave5/wave5-vdi.o: in function `.L116':
wave5-vdi.c:(.text+0xaac): undefined reference to `gen_pool_dma_alloc'
riscv32-linux-ld: drivers/media/platform/chips-media/wave5/wave5-vdi.o: in function `wave5_vdi_free_sram':
wave5-vdi.c:(.text+0xb60): undefined reference to `gen_pool_free_owner'

Fixes: 9707a6254a8a ("media: chips-media: wave5: Add the v4l2 layer")
Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Nas Chung <[e-mail]>
Cc: Jackson Lee <[e-mail]>
Cc: Hans Verkuil <[e-mail]>
Cc: Mauro Carvalho Chehab <[e-mail]>
Cc: [e-mail]
Signed-off-by: Sebastian Fricke <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/platform/chips-media/wave5/Kconfig

···
 	select VIDEOBUF2_DMA_CONTIG
 	select VIDEOBUF2_VMALLOC
 	select V4L2_MEM2MEM_DEV
+	select GENERIC_ALLOCATOR
 	help
 	  Chips&Media stateful encoder and decoder driver.
 	  The driver supports HEVC and H264 formats.