soc: qcom: boot_stats: Moved the early cam entry

Added the new bootmarkers in struct boot_stats for
bootloader_checksum_start and bootloader_checksum_end
to match the exact order of entries defined in the
bootloader enum bs_entry. And also moved the
bootloader_early_camera_start entry to the bottom
to match the same.

Change-Id: I1fa19aa21b658d8fdf7dcf5bba6658c40420d426
Signed-off-by: E V Ravi <evenka@codeaurora.org>