net: mvpp2: make the per-cpu helpers static

The Marvell PPv2 driver has per-cpu functions. As they only are used in
the main file, make them static and remove their prototype from the
header.
Signed-off-by: NAntoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvpp2/mvpp2.h

@@ -1099,13 +1099,6 @@ u32 mvpp2_read(struct mvpp2 *priv, u32 offset);
 
 u32 mvpp2_read_relaxed(struct mvpp2 *priv, u32 offset);
 
-void mvpp2_percpu_write(struct mvpp2 *priv, unsigned int cpu, u32 offset,
-			u32 data);
-u32 mvpp2_percpu_read(struct mvpp2 *priv, unsigned int cpu, u32 offset);
-
-void mvpp2_percpu_write_relaxed(struct mvpp2 *priv, unsigned int cpu,
-				u32 offset, u32 data);
-
 void mvpp2_dbgfs_init(struct mvpp2 *priv, const char *name);
 
 void mvpp2_dbgfs_cleanup(struct mvpp2 *priv);

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

@@ -122,19 +122,19 @@ u32 mvpp2_read_relaxed(struct mvpp2 *priv, u32 offset)
  *   MVPP2_TXQ_PREF_BUF_REG    (related to MVPP2_TXQ_NUM_REG)
  *   MVPP2_TXQ_PREF_BUF_REG    (related to MVPP2_TXQ_NUM_REG)
  */
-void mvpp2_percpu_write(struct mvpp2 *priv, unsigned int cpu,
+static void mvpp2_percpu_write(struct mvpp2 *priv, unsigned int cpu,
 			       u32 offset, u32 data)
 {
 	writel(data, priv->swth_base[cpu] + offset);
 }
 
-u32 mvpp2_percpu_read(struct mvpp2 *priv, unsigned int cpu,
+static u32 mvpp2_percpu_read(struct mvpp2 *priv, unsigned int cpu,
 			     u32 offset)
 {
 	return readl(priv->swth_base[cpu] + offset);
 }
 
-void mvpp2_percpu_write_relaxed(struct mvpp2 *priv, unsigned int cpu,
+static void mvpp2_percpu_write_relaxed(struct mvpp2 *priv, unsigned int cpu,
 				       u32 offset, u32 data)
 {
 	writel_relaxed(data, priv->swth_base[cpu] + offset);