dmaengine: mv_xor: drop of_match_ptr from of_device_id table

The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
matching via PRP0001, even though it is not relevant here). This fixes
compile warning (!CONFIG_OF on x86_64):

drivers/dma/mv_xor.c:1281:34: warning:
‘mv_xor_dt_ids’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/mv_xor.c

···
 	.resume         = mv_xor_resume,
 	.driver		= {
 		.name	        = MV_XOR_NAME,
-		.of_match_table = of_match_ptr(mv_xor_dt_ids),
+		.of_match_table = mv_xor_dt_ids,
 	},
 };