[PATCH v2 -next] memory: omap-gpmc: Fix -Wunused-function warnings

[YueHaibing]

If CONFIG_OF is not set, make W=1 warns:

drivers/memory/omap-gpmc.c:987:12: warning: ‘gpmc_cs_remap’ defined but not used [-Wunused-function]
 static int gpmc_cs_remap(int cs, u32 base)
            ^~~~~~~~~~~~~
drivers/memory/omap-gpmc.c:926:20: warning: ‘gpmc_cs_get_name’ defined but not used [-Wunused-function]
 static const char *gpmc_cs_get_name(int cs)
                    ^~~~~~~~~~~~~~~~
drivers/memory/omap-gpmc.c:919:13: warning: ‘gpmc_cs_set_name’ defined but not used [-Wunused-function]
 static void gpmc_cs_set_name(int cs, const char *name)
             ^~~~~~~~~~~~~~~~
Make them as  __maybe_unused to fix this.

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
v2: update commit log
---
 drivers/memory/omap-gpmc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index ac0f577a51a1..24372254986e 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -916,14 +916,14 @@ static bool gpmc_cs_reserved(int cs)
 	return gpmc->flags & GPMC_CS_RESERVED;
 }
 
-static void gpmc_cs_set_name(int cs, const char *name)
+static void __maybe_unused gpmc_cs_set_name(int cs, const char *name)
 {
 	struct gpmc_cs_data *gpmc = &gpmc_cs[cs];
 
 	gpmc->name = name;
 }
 
-static const char *gpmc_cs_get_name(int cs)
+static const __maybe_unused char *gpmc_cs_get_name(int cs)
 {
 	struct gpmc_cs_data *gpmc = &gpmc_cs[cs];
 
@@ -984,7 +984,7 @@ static int gpmc_cs_delete_mem(int cs)
  * "base". Returns 0 on success and appropriate negative error code
  * on failure.
  */
-static int gpmc_cs_remap(int cs, u32 base)
+static int __maybe_unused gpmc_cs_remap(int cs, u32 base)
 {
 	int ret;
 	u32 old_base, size;
-- 
2.17.1