kexec: use RangeReserved for all unrecognized memory map names
kexec: use RangeReserved for all unrecognized memory map names

We should treat them as reserved by default if we don't explicitly know
what they are.

Signed-off-by: Chris Koch <cd2178739c1fb8f241acc6c7bd5abe02c150d7e5@google.com>

GanShun/u-root,u-root/u-root,u-root/u-root,hugelgupf/u-root,hugelgupf/u-root,hugelgupf/u-root,GanShun/u-root,u-root/u-root,GanShun/u-root,hugelgupf/u-root