M68K: eb_cpu5282: general update and enhanced board support

- update clock settings for higher perfomance
- change standard baud rate to 115200
- fix flash base address
- remove unused defines
- add I2C support
- switch form board dependent flash to cfi
- remove board dependent flash code
- use sdram bank 0 instead of bank 1 on boot
- enable on board frame buffer instead external
- remove fake mac address form config
- add watchdog support
- add status led support

Signed-off-by: Jens Scharsig (BuS Elektronik) <esw@bus-elektronik.de>
[agust: fixed small style issues and build warning]
Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/boards.cfg b/boards.cfg
index 4dd9893..7ae663c 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -372,7 +372,7 @@
 M5235EVB_Flash32             m68k        mcf523x     m5235evb            freescale      -           M5235EVB:NORFLASH_PS32BIT,SYS_TEXT_BASE=0xFFC00000
 cobra5272                    m68k        mcf52x2     cobra5272           -
 idmr                         m68k        mcf52x2
-eb_cpu5282                   m68k        mcf52x2     eb_cpu5282          BuS            -           eb_cpu5282:SYS_TEXT_BASE=0xFFE00000
+eb_cpu5282                   m68k        mcf52x2     eb_cpu5282          BuS            -           eb_cpu5282:SYS_TEXT_BASE=0xFF000000
 eb_cpu5282_internal          m68k        mcf52x2     eb_cpu5282          BuS            -           eb_cpu5282:SYS_TEXT_BASE=0xF0000000
 TASREG                       m68k        mcf52x2     tasreg              esd
 M5208EVBE                    m68k        mcf52x2     m5208evbe           freescale