sf: move useful messages from debug to printf

At the moment, the default SPI flash subsystem is quite terse.  Errors and
successes both result in a generic message.  So move the useful errors and
useful successes to printf output by default.

While we're here, also convert the messages to use print_size().

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c
index b8da923..ff1df25 100644
--- a/drivers/mtd/spi/winbond.c
+++ b/drivers/mtd/spi/winbond.c
@@ -289,7 +289,7 @@
 struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
 {
 	const struct winbond_spi_flash_params *params;
-	unsigned long page_size;
+	unsigned page_size;
 	struct winbond_spi_flash *stm;
 	unsigned int i;
 
@@ -325,8 +325,9 @@
 				* params->sectors_per_block
 				* params->nr_blocks;
 
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
-			params->name, page_size, stm->flash.size);
+	printf("SF: Detected %s with page size %u, total ",
+	       params->name, page_size);
+	print_size(stm->flash.size, "\n");
 
 	return &stm->flash;
 }