ARM: tegra: Tegra20 pinmux cleanup

This renames all the Tegra20 pinmux pins and functions so they have a
prefix which matches the type name.

The entries in tegra20_pingroups[] are all updated to remove the columns
which are no longer used.

All affected code is updated to match.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c
index ef4e481..ce2db40 100644
--- a/board/nvidia/seaboard/seaboard.c
+++ b/board/nvidia/seaboard/seaboard.c
@@ -37,14 +37,14 @@
 	funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_4BIT);
 
 	/* For power GPIO PI6 */
-	pinmux_tristate_disable(PINGRP_ATA);
+	pinmux_tristate_disable(PMUX_PINGRP_ATA);
 	/* For CD GPIO PI5 */
-	pinmux_tristate_disable(PINGRP_ATC);
+	pinmux_tristate_disable(PMUX_PINGRP_ATC);
 }
 #endif
 
 void pin_mux_usb(void)
 {
 	/* For USB's GPIO PD0. For now, since we have no pinmux in fdt */
-	pinmux_tristate_disable(PINGRP_SLXK);
+	pinmux_tristate_disable(PMUX_PINGRP_SLXK);
 }