ARM: tegra: pinmux naming consistency fixes

Clean up the naming of pinmux-related objects:
* Refer to drive groups rather than pad groups to match the Linux kernel.
* Ensure all pinmux API types are prefixed with pmux_, values (defines)
  are prefixed with PMUX_, and functions prefixed with pinmux_.
* Modify a few type names to make their content clearer.
* Minimal changes to SoC-specific .h/.c files are made so the code still
  compiles. A separate per-SoC change will be made immediately following,
  in order to keep individual patch size down.

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/arch/arm/include/asm/arch-tegra30/pinmux.h b/arch/arm/include/asm/arch-tegra30/pinmux.h
index e10df76..0112e35 100644
--- a/arch/arm/include/asm/arch-tegra30/pinmux.h
+++ b/arch/arm/include/asm/arch-tegra30/pinmux.h
@@ -275,10 +275,10 @@
 	PINGRP_PEX_L2_RST_N,
 	PINGRP_PEX_L2_CLKREQ_N,
 	PINGRP_HDMI_CEC,	/* offset 0x33e0 */
-	PINGRP_COUNT,
+	PMUX_PINGRP_COUNT,
 };
 
-enum pdrive_pingrp {
+enum pmux_drvgrp {
 	PDRIVE_PINGROUP_AO1 = 0, /* offset 0x868 */
 	PDRIVE_PINGROUP_AO2,
 	PDRIVE_PINGROUP_AT1,
@@ -320,7 +320,7 @@
 	PDRIVE_PINGROUP_GPV,
 	PDRIVE_PINGROUP_DEV3 = 49,	/* offset 0x92c */
 	PDRIVE_PINGROUP_CEC = 52,	/* offset 0x938 */
-	PDRIVE_PINGROUP_COUNT,
+	PMUX_DRVGRP_COUNT,
 };
 
 /*
@@ -448,7 +448,7 @@
 };
 
 #define TEGRA_PMX_HAS_PIN_IO_BIT_ETC
-#define TEGRA_PMX_HAS_PADGRPS
+#define TEGRA_PMX_HAS_DRVGRPS
 #include <asm/arch-tegra/pinmux.h>
 
 #endif /* _TEGRA30_PINMUX_H_ */