powerpc: Emulation support for load/store instructions on LE
emulate_step() uses a number of underlying kernel functions that were initially not enabled for LE. This has been rectified since. So, fix emulate_step() for LE for the corresponding instructions. Cc: stable@vger.kernel.org # v3.18+ Reported-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NRavi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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