arm: kirkwood: Sheevaplug : Use Marvell uclass mvgbe and PHY driver for Ethernet

The Globalscale Technologies Sheevaplug board has the network chip
Marvell 88E1116R. Use uclass mvgbe and the compatible driver M88E1310
driver to bring up Ethernet.

- Remove CONFIG_RESET_PHY_R symbol from all board files
- Use uclass mvgbe to bring up the network. And remove ad-hoc code.
- Enable CONFIG_PHY_MARVELL to properly configure the network.
- Miscellaneous changes: Move constants to .c file and remove header file
board/Marvell/sheevaplug/sheevaplug.h, use BIT macro, and add/cleanup
comments.

Signed-off-by: Tony Dinh <mibodhi@gmail.com>
diff --git a/configs/sheevaplug_defconfig b/configs/sheevaplug_defconfig
index 0525bb4..0477cd7 100644
--- a/configs/sheevaplug_defconfig
+++ b/configs/sheevaplug_defconfig
@@ -21,7 +21,6 @@
 CONFIG_BOOTCOMMAND="${x_bootcmd_kernel}; setenv bootargs ${x_bootargs} ${x_bootargs_root}; bootm 0x6400000;"
 CONFIG_USE_PREBOOT=y
 # CONFIG_DISPLAY_BOARDINFO is not set
-CONFIG_RESET_PHY_R=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_FLASH is not set
@@ -29,13 +28,13 @@
 CONFIG_CMD_NAND=y
 CONFIG_CMD_SATA=y
 CONFIG_CMD_USB=y
-# CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
 CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
 CONFIG_CMD_JFFS2=y
 CONFIG_CMD_MTDPARTS=y
 CONFIG_MTDIDS_DEFAULT="nand0=orion_nand"
@@ -54,6 +53,7 @@
 CONFIG_MVEBU_MMC=y
 CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
+CONFIG_PHY_MARVELL=y
 CONFIG_DM_ETH=y
 CONFIG_MVGBE=y
 CONFIG_MII=y