spi: Change 'page' to 'sector' in log message

The log message says 'page size' while actually the sector size is
printed. This is confusing since for stmicro page size != sector size.
Also add '0x' prefix to numbers to make it clear they are in hex.

TEST=Build and booted on Minnowboard Max

Change-Id: I795a4b7c1bc8de2538a87fd4ba56f5a78d9ca2ac
Signed-off-by: David Imhoff <dimhoff_devel@xs4all.nl>
Reviewed-on: http://review.coreboot.org/10067
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/src/drivers/spi/spi_flash.c b/src/drivers/spi/spi_flash.c
index d40f72a..d2a3c66 100644
--- a/src/drivers/spi/spi_flash.c
+++ b/src/drivers/spi/spi_flash.c
@@ -381,7 +381,7 @@
 	tseg_relocate((void **)&flash->name);
 #endif
 
-	printk(BIOS_INFO, "SF: Detected %s with page size %x, total %x\n",
+	printk(BIOS_INFO, "SF: Detected %s with sector size 0x%x, total 0x%x\n",
 			flash->name, flash->sector_size, flash->size);
 
 	spi_flash_dev = flash;