apple_z2_hbpp_blob_hdr
struct apple_z2_hbpp_blob_hdr *hdr;
blob_size = sizeof(struct apple_z2_hbpp_blob_hdr) + cal_size + sizeof(__le32);
hdr = (struct apple_z2_hbpp_blob_hdr *)blob_data;
cal_data = blob_data + sizeof(struct apple_z2_hbpp_blob_hdr);