spi: spi.c: Add missing __percpu annotations in users of spi_statistics

Fixes sparse warnings of this kind:
drivers/spi/spi.c:117:16: sparse:     expected struct spi_statistics *
drivers/spi/spi.c:117:16: sparse:     got struct spi_statistics [noderef]
 __percpu *[assigned] pcpu_stats
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220805084458.1602277-1-david@protonic.nlSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi.c

@@ -95,7 +95,7 @@ static ssize_t driver_override_show(struct device *dev,
 }
 static DEVICE_ATTR_RW(driver_override);
 
-static struct spi_statistics *spi_alloc_pcpu_stats(struct device *dev)
+static struct spi_statistics __percpu *spi_alloc_pcpu_stats(struct device *dev)
 {
 	struct spi_statistics __percpu *pcpu_stats;
 
@@ -162,7 +162,7 @@ static struct device_attribute dev_attr_spi_device_##field = {		\
 }
 
 #define SPI_STATISTICS_SHOW_NAME(name, file, field)			\
-static ssize_t spi_statistics_##name##_show(struct spi_statistics *stat, \
+static ssize_t spi_statistics_##name##_show(struct spi_statistics __percpu *stat, \
 					    char *buf)			\
 {									\
 	ssize_t len;							\
@@ -309,7 +309,7 @@ static const struct attribute_group *spi_master_groups[] = {
 	NULL,
 };
 
-static void spi_statistics_add_transfer_stats(struct spi_statistics *pcpu_stats,
+static void spi_statistics_add_transfer_stats(struct spi_statistics __percpu *pcpu_stats,
 					      struct spi_transfer *xfer,
 					      struct spi_controller *ctlr)
 {
@@ -1275,8 +1275,8 @@ static int spi_transfer_wait(struct spi_controller *ctlr,
 			     struct spi_message *msg,
 			     struct spi_transfer *xfer)
 {
-	struct spi_statistics *statm = ctlr->pcpu_statistics;
-	struct spi_statistics *stats = msg->spi->pcpu_statistics;
+	struct spi_statistics __percpu *statm = ctlr->pcpu_statistics;
+	struct spi_statistics __percpu *stats = msg->spi->pcpu_statistics;
 	u32 speed_hz = xfer->speed_hz;
 	unsigned long long ms;
 
@@ -1432,8 +1432,8 @@ static int spi_transfer_one_message(struct spi_controller *ctlr,
 	struct spi_transfer *xfer;
 	bool keep_cs = false;
 	int ret = 0;
-	struct spi_statistics *statm = ctlr->pcpu_statistics;
-	struct spi_statistics *stats = msg->spi->pcpu_statistics;
+	struct spi_statistics __percpu *statm = ctlr->pcpu_statistics;
+	struct spi_statistics __percpu *stats = msg->spi->pcpu_statistics;
 
 	spi_set_cs(msg->spi, true, false);