target/ppc: Fix e200 duplicate SPRs

target/ppc: Fix e200 duplicate SPRs

DSRR0/1 registers are in the BookE ISA not e200 specific, so
remove the duplicate e200 register definitions.

Cc: Roman Kapl <rka@sysgo.com>
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2768
Fixes: 0e3bf4890906 ("ppc: add DBCR based debugging")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
(cherry picked from commit 73c0c904fc99e2ceecbbded84ec76d40d3f2daae)
(Mjt: context fix for
 v9.0.0-935-g581eea5d656b "target/ppc: Split off common embedded TLB init")
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>