apalis/colibri_t20/30: clean-up

Various clean-ups either in comments, order or spacing without any
functional impact:
- Add some comments in the device trees resp. reorder some parameters
  for consistency across all our modules.
- Sort some include files alphabetically (while leaving common.h on
  top of course).
- Streamline some comments in the configuration files and fix the
  spacing from using spaces to tabs.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/include/configs/apalis_t30.h b/include/configs/apalis_t30.h
index 27c013b..6c0ae22 100644
--- a/include/configs/apalis_t30.h
+++ b/include/configs/apalis_t30.h
@@ -1,6 +1,8 @@
 /*
  * Copyright (c) 2014-2015 Marcel Ziswiler
  *
+ * Configuration settings for the Toradex Apalis T30 modules.
+ *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
@@ -26,7 +28,7 @@
 #define CONFIG_SYS_I2C_TEGRA
 #define CONFIG_CMD_I2C
 
-/* SD/MMC */
+/* SD/MMC support */
 #define CONFIG_MMC
 #define CONFIG_GENERIC_MMC
 #define CONFIG_TEGRA_MMC
@@ -38,10 +40,10 @@
 #define CONFIG_SYS_MMC_ENV_DEV		0
 #define CONFIG_SYS_MMC_ENV_PART		2
 
-/* USB Host support */
+/* USB host support */
 #define CONFIG_USB_EHCI
 #define CONFIG_USB_EHCI_TEGRA
-#define CONFIG_USB_MAX_CONTROLLER_COUNT 3
+#define CONFIG_USB_MAX_CONTROLLER_COUNT	3
 #define CONFIG_USB_STORAGE
 #define CONFIG_CMD_USB