driver core: Const-correct platform getbyname functions

This converts resource and IRQ getbyname functions for the platform
bus to use const char *, I ran into compiler moanings when I tried
using a const char * for looking up a certain resource.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index b67bb5d..8dc5123 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -36,8 +36,8 @@
 
 extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int);
 extern int platform_get_irq(struct platform_device *, unsigned int);
-extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, char *);
-extern int platform_get_irq_byname(struct platform_device *, char *);
+extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, const char *);
+extern int platform_get_irq_byname(struct platform_device *, const char *);
 extern int platform_add_devices(struct platform_device **, int);
 
 extern struct platform_device *platform_device_register_simple(const char *, int id,