Commit 8040fdbb8b (MdePkg: consistently use "Property" in BaseFdtLib)
got a bit carried away and confused around how libfdt contains both
getprop and get_property functions, which operate quite differently;
the getprop variant returns a pointer to the value of the property,
whereas the get_property returns a pointer to the fdt_property
structure.
Untangle this, including fixing up affected existing in-tree users, and
adding the previously not exported FdtGetProp wrapper on fdt_getprop.
Continuous-integration-options: PatchCheck.ignore-multi-package
Signed-off-by: Leif Lindholm <leif.lindholm@oss.qualcomm.com>
e25331fc45