defconfigs: Piggyback microblazeel on microblaze

Theres no difference in defconfig. Going forward microblazeel should
superset microblaze so use an include.
Signed-off-by: NPeter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

default-configs/microblazeel-softmmu.mak

 # Default configuration for microblazeel-softmmu
 
-CONFIG_PTIMER=y
-CONFIG_PFLASH_CFI01=y
-CONFIG_SERIAL=y
-CONFIG_XILINX=y
-CONFIG_XILINX_AXI=y
-CONFIG_XILINX_SPI=y
-CONFIG_XILINX_ETHLITE=y
-CONFIG_SSI=y
-CONFIG_SSI_M25P80=y
+include microblaze-softmmu.mak