sparc: update copyright in piggyback.c
sparc: update copyright in piggyback.c

Update copyright info in piggyback.c to include
info from piggyback_64.c.
Include my own copyright too.

Signed-off-by: Sam Ravnborg <f16bed56189e249fe4ca8ed10a1ecae60e8ceac0@ravnborg.org>
Cc: Josip Rodin <c7d56fc0723a766824f554c4d00f28ea16c2c36b@entuzijast.net>
Cc: Jakub Jelinek <1d3764b91b902f6b45836e2498da81fe35caf6d6@redhat.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas