u8800: Enable zram

It requests those changes;

https://github.com/forumber/android_kernel_huawei_u8800-1/commit/12a94d48c03d1a57544c9f8be69e126458a0dc73

https://github.com/forumber/android_kernel_huawei_u8800-1/commit/a346bbd9662a2993990e8f94e7b6e87272e52af3

https://github.com/forumber/android_kernel_huawei_u8800-1/commit/db4e969028cd9de80ece3ceedac0fa623428a1c8