hammerhead: Update build fingerprint and description to 5.0.1 LRX22C

Fix a small derp in the blob file as well.

Change-Id: Ib67e32ff3858c651bd1eabe03487314f5396f515
Cleanup Obsolete LOCAL_PRELINK_MODULE.

Bug: 18675947
Change-Id: Ic00a367b5c108f4a7c18b3ab4d3a1da74cc97353