I have a question about configure Android kernel. I entery the kernel dir ANDROID_DIR/kernel_imx, and run " make menuconfig" ,and config the kernel ,then save the config file. and I go to the android top dir to "make bootimage",after make bootimage, I go to kernel_imx dir and "make menuconfig" again, and I found the config file back to its origial state.How can it happy? Is repressent that my own .config file didn't work?