memory: renesas-rpc-if: Make rpcif_enable/disable_rpm() as static inline

Define rpcif_enable_rpm() and rpcif_disable_rpm() as static
inline in the header instead of exporting them.
Suggested-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Pavel Machek (CIP) <pavel@denx.de>
Link: https://lore.kernel.org/r/20201126191146.8753-5-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Krzysztof Kozlowski <krzk@kernel.org>

drivers/memory/renesas-rpc-if.c

@@ -12,7 +12,6 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
-#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
@@ -204,18 +203,6 @@ int rpcif_sw_init(struct rpcif *rpc, struct device *dev)
 }
 EXPORT_SYMBOL(rpcif_sw_init);
 
-void rpcif_enable_rpm(struct rpcif *rpc)
-{
-	pm_runtime_enable(rpc->dev);
-}
-EXPORT_SYMBOL(rpcif_enable_rpm);
-
-void rpcif_disable_rpm(struct rpcif *rpc)
-{
-	pm_runtime_disable(rpc->dev);
-}
-EXPORT_SYMBOL(rpcif_disable_rpm);
-
 void rpcif_hw_init(struct rpcif *rpc, bool hyperflash)
 {
 	u32 dummy;

include/memory/renesas-rpc-if.h

@@ -10,6 +10,7 @@
 #ifndef __RENESAS_RPC_IF_H
 #define __RENESAS_RPC_IF_H
 
+#include <linux/pm_runtime.h>
 #include <linux/types.h>
 
 enum rpcif_data_dir {
@@ -77,11 +78,19 @@ struct	rpcif {
 
 int  rpcif_sw_init(struct rpcif *rpc, struct device *dev);
 void rpcif_hw_init(struct rpcif *rpc, bool hyperflash);
-void rpcif_enable_rpm(struct rpcif *rpc);
-void rpcif_disable_rpm(struct rpcif *rpc);
 void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs,
 		   size_t *len);
 int rpcif_manual_xfer(struct rpcif *rpc);
 ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf);
 
+static inline void rpcif_enable_rpm(struct rpcif *rpc)
+{
+	pm_runtime_enable(rpc->dev);
+}
+
+static inline void rpcif_disable_rpm(struct rpcif *rpc)
+{
+	pm_runtime_disable(rpc->dev);
+}
+
 #endif // __RENESAS_RPC_IF_H