powerpc: remove duplicate definition of TEXASR_FS

It appears that commits 7f06f21d ("powerpc/tm: Add checking to
treclaim/trechkpt") and e4e38121

 ("KVM: PPC: Book3S HV: Add
transactional memory support") both added definitions of TEXASR_FS.
Remove one of them. At the same time, fix the alignment of the remaining
definition (should be tab-separated like the rest of the #defines).

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>