hal: Rename all instances of msmcobalt to msm8998

Rename all instances of msmcobalt to msm8998. Rename
the config directory, defines, functions, and look for
the renamed target and soundcard.

Change-Id: Idbc4c5a425c837342069c2db17b6ec984021bf60
diff --git a/visualizer/offload_visualizer.c b/visualizer/offload_visualizer.c
index f49c434..858fafa 100644
--- a/visualizer/offload_visualizer.c
+++ b/visualizer/offload_visualizer.c
@@ -179,7 +179,7 @@
 
 #define MIXER_CARD 0
 #define SOUND_CARD 0
-#ifdef PLATFORM_MSMCOBALT
+#ifdef PLATFORM_MSM8998
 #define CAPTURE_DEVICE 7
 #else
 #define CAPTURE_DEVICE 8