add kexec patches mentioned by KINGbabasula

http://forum.xda-developers.com/oneplus-one/development/mod-multirom-v26-t2835738

patch 1: http://click.xda-developers.com/api/click?format=go&jsonp=vglnk_jsonp_14073722484357&key=f0a7f91912ae2b52e0700f73990eb321&libId=cd39e40b-9f58-4030-a44f-40e150a437fd&loc=http%3A%2F%2Fforum.xda-developers.com%2Foneplus-one%2Fdevelopment%2Fmod-multirom-v26-t2835738&v=1&out=https%3A%2F%2Fgithub.com%2FKINGbabasula%2Fandroid_kernel_oneplus_msm8974%2Fcommit%2F3e93ccd23a37cc5fa3140fc935a43362a678de37&ref=http%3A%2F%2Fforum.xda-developers.com%2Foneplus-one%2Fdevelopment&title=%5BMOD%5D%20MultiROM%20v26%20%7C%20OnePlus%20One%20%7C%20XDA%20Forum&txt=https%3A%2F%2Fgithub.com%2FKINGbabasula%2Fandr...a43362a678de37

patch 2: http://click.xda-developers.com/api/click?format=go&jsonp=vglnk_jsonp_14073722927818&key=f0a7f91912ae2b52e0700f73990eb321&libId=cd39e40b-9f58-4030-a44f-40e150a437fd&loc=http%3A%2F%2Fforum.xda-developers.com%2Foneplus-one%2Fdevelopment%2Fmod-multirom-v26-t2835738&v=1&out=https%3A%2F%2Fgithub.com%2FKINGbabasula%2Fandroid_kernel_oneplus_msm8974%2Fcommit%2F4f1d5465f1435499c17ed31e328cce86b1712dc6&ref=http%3A%2F%2Fforum.xda-developers.com%2Foneplus-one%2Fdevelopment&title=%5BMOD%5D%20MultiROM%20v26%20%7C%20OnePlus%20One%20%7C%20XDA%20Forum&txt=https%3A%2F%2Fgithub.com%2FKINGbabasula%2Fandr...8cce86b1712dc6