ANDROID: fips140 - fix integrity check by unapplying dynamic SCS

Since the kernel now has dynamic Shadow Call Stack (SCS) enabled, on
CPUs that don't support Pointer Authentication Codes (PAC) the kernel
runtime-patches paciasp and autiasp instructions into instructions that
push and pop from the shadow call stack.  This includes instructions in
loaded modules.  This broke the fips140 integrity check which needs to
know how to undo all text changes made by the module loader in order to
re-create the original text.

Fix this by updating fips140.ko to undo the dynamic SCS patching.

Bug: 188620248
Change-Id: I992bcd6c34b3340c6489b40a125715e1304cb445
Signed-off-by: Eric Biggers <ebiggers@google.com>