Driver core: make struct platform_driver.id_table const

This fixes a warning on several pxa based machines:

	arch/arm/mach-pxa/ssp.c:475: warning: initialization discards qualifiers from pointer target type

Signed-off-by: Uwe Kleine-König <[email protected]>
Acked-by: Vikram Dhillon <[email protected]>
Acked-by: Eric Miao <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 937d580..575e08b 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -636,7 +636,7 @@
 }
 
 static const struct platform_device_id *platform_match_id(
-			struct platform_device_id *id,
+			const struct platform_device_id *id,
 			struct platform_device *pdev)
 {
 	while (id->name[0]) {