memory: renesas-rpc-if: Fix RPCIF_DRENR_CDB macro error

Fix the below macro error found while moving the reg definitions
to renesas-rpc-if-regs.h in the later patch.

ERROR: Macros with complex values should be enclosed in parentheses

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20250401143537.224047-3-biju.das.jz@bp.renesas.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: bijudas

drivers/memory/renesas-rpc-if.c

@@ -56,7 +56,7 @@
 #define RPCIF_DROPR		0x0018	/* R/W */
 
 #define RPCIF_DRENR		0x001C	/* R/W */
-#define RPCIF_DRENR_CDB(o)	(u32)((((o) & 0x3) << 30))
+#define RPCIF_DRENR_CDB(o)	(((u32)((o) & 0x3)) << 30)
 #define RPCIF_DRENR_OCDB(o)	(((o) & 0x3) << 28)
 #define RPCIF_DRENR_ADB(o)	(((o) & 0x3) << 24)
 #define RPCIF_DRENR_OPDB(o)	(((o) & 0x3) << 20)