kexec: set KEXEC_TYPE_CRASH before sanity_check_segment_list()

kexec: set KEXEC_TYPE_CRASH before sanity_check_segment_list()

sanity_check_segment_list() checks KEXEC_TYPE_CRASH flag to ensure all the
segments of the loaded crash kernel are within the kernel crash resource
limits, so set the flag beforehand.

Signed-off-by: Xunlei Pang <[email protected]>
Acked-by: Dave Young <[email protected]>
Cc: Eric Biederman <[email protected]>
Cc: Vivek Goyal <[email protected]>
Acked-by: Baoquan He <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>