Mini2440 modify 3.19: modify UART2 driver

s3c2410_gpio_pullup() ->  s3c_gpio_setpull()
s3c2410_gpio_cfgpin -> s3c_gpio_cfgpin
Mini2440 modify 3.20: modify I2C driver

use rootfs_qtopia_qt4.img-20110421 can works all fine.
Mini2440 modify 3.21: modify watchdog driver
Mini2440 modify 3.21: modify simple LEDs driver

There are some differences.
s3c2410_gpio_setpin  -> gpio_set_value() or gpio_direction_output()
s3c2410_gpio_cfgpin  -> s3c_gpio_cfgpin
ioctl                -> unlocked_ioctl
from: b19dd42faf413b4705d4adb38521e82d73fa4249
//struct inode *inode,  --for [warning: initialization from incompatible pointer type]

---
drivers/char/mini2440_leds.c: In function 'sbc2440_leds_ioctl':
drivers/char/mini2440_leds.c:55: error: implicit declaration of function 's3c2410_gpio_setpin'
drivers/char/mini2440_leds.c: At top level:
drivers/char/mini2440_leds.c:64: error: unknown field 'ioctl' specified in initializer
drivers/char/mini2440_leds.c:64: warning: initialization from incompatible pointer type
drivers/char/mini2440_leds.c: In function 'dev_init':
drivers/char/mini2440_leds.c:80: error: implicit declaration of function 's3c2410_gpio_cfgpin'
---