iommu/arm-smmu: set MAX_MASTER_STREAMIDS to MAX_PHANDLE_ARGS

The DT parsing code that determines stream IDs uses
of_parse_phandle_with_args and thus MAX_MASTER_STREAMIDS
is always bound by MAX_PHANDLE_ARGS.

Signed-off-by: Andreas Herrmann <andreas.herrmann@calxeda.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

drivers/iommu/arm-smmu.c

@@ -48,7 +48,7 @@
 #include <asm/pgalloc.h>
 
 /* Maximum number of stream IDs assigned to a single device */
-#define MAX_MASTER_STREAMIDS		8
+#define MAX_MASTER_STREAMIDS		MAX_PHANDLE_ARGS
 
 /* Maximum number of context banks per SMMU */
 #define ARM_SMMU_MAX_CBS		128