misc: sram: report correct SRAM pool size

Since some space in SRAM may be reserved, report the left free space
in the allocated memory pool instead of total physical size of the
SRAM device.
Signed-off-by: NVladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/sram.c

@@ -190,7 +190,8 @@ static int sram_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, sram);
 
-	dev_dbg(&pdev->dev, "SRAM pool: %ld KiB @ 0x%p\n", size / 1024, virt_base);
+	dev_dbg(&pdev->dev, "SRAM pool: %zu KiB @ 0x%p\n",
+		gen_pool_size(sram->pool) / 1024, virt_base);
 
 	return 0;