[POWERPC] Compile a zImage.chrp if PPC_EFIKA seleted

Signed-off-by: NNicolas DET <nd@bplan-gmbh.de>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/boot/Makefile

@@ -156,6 +156,7 @@ image-$(CONFIG_PPC_PSERIES)		+= zImage.pseries
 image-$(CONFIG_PPC_MAPLE)		+= zImage.pseries
 image-$(CONFIG_PPC_IBM_CELL_BLADE)	+= zImage.pseries
 image-$(CONFIG_PPC_CHRP)		+= zImage.chrp
+image-$(CONFIG_PPC_EFIKA)		+= zImage.chrp
 image-$(CONFIG_PPC_PMAC)		+= zImage.pmac
 image-$(CONFIG_DEFAULT_UIMAGE)		+= uImage