mmc: prevent some warnings with make W=1

Add missing prototypes for global functions and
make local functions static.

cc: panto@antoniou-consulting.com
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

drivers/mmc/mmc.c

@@ -21,7 +21,7 @@
 static struct list_head mmc_devices;
 static int cur_dev_num = -1;
 
-int __weak board_mmc_getwp(struct mmc *mmc)
+__weak int board_mmc_getwp(struct mmc *mmc)
 {
 	return -1;
 }
@@ -375,7 +375,7 @@ static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
 	return 0;
 }
 
-int mmc_send_op_cond(struct mmc *mmc)
+static int mmc_send_op_cond(struct mmc *mmc)
 {
 	struct mmc_cmd cmd;
 	int err, i;
@@ -397,7 +397,7 @@ int mmc_send_op_cond(struct mmc *mmc)
 	return IN_PROGRESS;
 }
 
-int mmc_complete_op_cond(struct mmc *mmc)
+static int mmc_complete_op_cond(struct mmc *mmc)
 {
 	struct mmc_cmd cmd;
 	int timeout = 1000;

drivers/mmc/omap_hsmmc.c

@@ -120,7 +120,7 @@ static void omap5_pbias_config(struct mmc *mmc)
 }
 #endif
 
-unsigned char mmc_board_init(struct mmc *mmc)
+static unsigned char mmc_board_init(struct mmc *mmc)
 {
 #if defined(CONFIG_OMAP34XX)
 	t2_t *t2_base = (t2_t *)T2_BASE;

include/mmc.h

@@ -327,10 +327,11 @@ struct mmc *find_mmc_device(int dev_num);
 int mmc_set_dev(int dev_num);
 void print_mmc_devices(char separator);
 int get_mmc_num(void);
-int board_mmc_getcd(struct mmc *mmc);
 int mmc_switch_part(int dev_num, unsigned int part_num);
 int mmc_getcd(struct mmc *mmc);
+int board_mmc_getcd(struct mmc *mmc);
 int mmc_getwp(struct mmc *mmc);
+int board_mmc_getwp(struct mmc *mmc);
 int mmc_set_dsr(struct mmc *mmc, u16 val);
 /* Function to change the size of boot partition and rpmb partitions */
 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
@@ -385,6 +386,7 @@ int mmc_legacy_init(int verbose);
 #endif
 
 int board_mmc_init(bd_t *bis);
+int cpu_mmc_init(bd_t *bis);
 
 /* Set block count limit because of 16 bit register limit on some hardware*/
 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT