hal: update platform info parser to read key value pairs

Add support to parse platform specific configuration as
key value pairs from audio_platform_info.xml file.

Change-Id: Id1199f6f5cb3a060476f713a69b5de05f48815ce
diff --git a/hal/platform_api.h b/hal/platform_api.h
index 921ff0b..5e2ce45 100644
--- a/hal/platform_api.h
+++ b/hal/platform_api.h
@@ -87,8 +87,8 @@
 
 int platform_set_snd_device_backend(snd_device_t snd_device, const char * backend);
 
-/* From platform_info_parser.c */
-int platform_info_init(const char *filename);
+/* From platform_info.c */
+int platform_info_init(const char *filename, void *);
 
 void platform_snd_card_update(void *platform, int snd_scard_state);