do not override input config symbols (#4722)

SVN-Revision: 15235

target/linux/au1000/au1500/config-2.6.27

@@ -94,8 +94,6 @@ CONFIG_I2C_BOARDINFO=y
 CONFIG_I2C_CHARDEV=m
 # CONFIG_IDE is not set
 CONFIG_INITRAMFS_SOURCE=""
-CONFIG_INPUT=y
-CONFIG_INPUT_KEYBOARD=y
 CONFIG_IRQ_CPU=y
 CONFIG_KEXEC=y
 # CONFIG_KEYBOARD_ATKBD is not set