ANDROID: GKI: fix crc change in __icmp_send

In the android14-6.1-lts branch, a few new include files were added to
net/ipv4/icmp.c, which ended up changing the CRC generation for
__icmp_send.  This did not show up in the -lts branch as that symbol was
not being tracked there, BUT it was added to the non-LTS branch, which
caused the mis-match to show up when merging them together.

Fix this up by providing the proper __GENKSYMS__ hack to enable the CRC
to remain stable.

Fixes: eaba5f67 ("ipv4: icmp: Unmask upper DSCP bits in icmp_route_lookup()")
Fixes: 524c341c ("net/ipv4: add tracepoint for icmp_send")
Change-Id: If28644b3fa4c474de4d2b08eef50e84b19685d74
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>