Merge "Correct comment in boot image header"

struct boot_img_hdr_v1 : public boot_img_hdr_v0 {

    uint32_t recovery_dtbo_size;   /* size in bytes for recovery DTBO image */

    uint64_t recovery_dtbo_offset; /* physical load addr */

    uint64_t recovery_dtbo_offset; /* offset to recovery dtbo in boot image */

    uint32_t header_size;

} __attribute__((packed));

 * 1. kernel and ramdisk are required (size != 0)

 * 2. recovery_dtbo is required for recovery.img in non-A/B devices(recovery_dtbo_size != 0)

 * 3. second is optional (second_size == 0 -> no second)

 * 4. load each element (kernel, ramdisk, second, recovery_dtbo) at

 * 4. load each element (kernel, ramdisk, second) at

 *    the specified physical address (kernel_addr, etc)

 * 5. prepare tags at tag_addr.  kernel_args[] is

 * 5. If booting to recovery mode in a non-A/B device, extract recovery dtbo and

 *    apply the correct set of overlays on the base device tree depending on the

 *    hardware/product revision.

 * 6. prepare tags at tag_addr.  kernel_args[] is

 *    appended to the kernel commandline in the tags.

 * 6. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr

 * 7. if second_size != 0: jump to second_addr

 * 7. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr

 * 8. if second_size != 0: jump to second_addr

 *    else: jump to kernel_addr

 */