msm_shared: Enable shutdown detect compilation for MSM8226
msm_shared: Enable shutdown detect compilation for MSM8226

Add the shutdown detection function needed for MSM8226.
It is used to support the feature of long press power key.

Change-Id: Id0a07f46cd9ae1bc9840d9e92292595143f6f7cf

lg-devs/g2-bootloader,t2m-foxfone/android_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,t2m-foxfone/android_kernel_lk,lg-devs/g2-bootloader,lg-devs/g2-bootloader,lg-devs/g2-bootloader,t2m-foxfone/android_kernel_lk,t2m-foxfone/android_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,t2m-foxfone/android_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,lg-devs/g2-bootloader,mozilla-b2g/fairphone2_kernel_lk