omap-common: Rename set_muxconf_regs_essential to set_muxconf_regs

There is no distinction between essential and non-essential mux configuration,
so it doesn't make sense to have an "essential" prefix.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c
index 959a23f..13b5daf 100644
--- a/board/ti/panda/panda.c
+++ b/board/ti/panda/panda.c
@@ -268,7 +268,7 @@
 	return 0;
 }
 
-void set_muxconf_regs_essential(void)
+void set_muxconf_regs(void)
 {
 	do_set_mux((*ctrl)->control_padconf_core_base,
 		   core_padconf_array_essential,