kconfig/ppc: Add kconfigs based on ones from Void Linux

See https://github.com/void-ppc/void-packages/tree/master/srcpkgs/linux5.4/files

Signed-off-by: Matt Turner <mattst88@gentoo.org>

releases/specs/ppc/ppc32/installcd-stage2-minimal.spec

@@ -14,7 +14,7 @@ livecd/type: gentoo-release-minimal
 
 livecd/rcadd: pbbuttonsd|default
 
-boot/kernel: ibmpower G5 ppc32
+boot/kernel: ibmpower ppc64 ppc32
 
 ## IBM hardware
 boot/kernel/ibmpower/sources: sys-kernel/gentoo-sources
@@ -42,12 +42,12 @@ boot/kernel/ibmpower/use:
 	usb
 
 ## Apple hardware
-boot/kernel/G5/sources: sys-kernel/gentoo-sources
-boot/kernel/G5/config: ../../../kconfig/powerpc/installcd-ppc64apple-4.19.config
-boot/kernel/G5/console: ttyS0,57600
-boot/kernel/G5/extraversion: G5
-boot/kernel/G5/gk_kernargs: --kernel-cc='gcc -m64' --kernel-ld='ld -m elf64ppc' --kernel-as='as -a64'
-boot/kernel/G5/use:
+boot/kernel/ppc64/sources: sys-kernel/gentoo-sources
+boot/kernel/ppc64/config: ../../../kconfig/powerpc/apple64.config
+boot/kernel/ppc64/console: ttyS0,57600
+boot/kernel/ppc64/extraversion: ppc64
+boot/kernel/ppc64/gk_kernargs: --kernel-cc='gcc -m64' --kernel-ld='ld -m elf64ppc' --kernel-as='as -a64'
+boot/kernel/ppc64/use:
 	-*
 	atm
 	fbcon
@@ -68,7 +68,7 @@ boot/kernel/G5/use:
 
 ## ppc32 hardware
 boot/kernel/ppc32/sources: sys-kernel/gentoo-sources
-boot/kernel/ppc32/config: ../../../kconfig/powerpc/installcd-ppc32apple-4.19.config
+boot/kernel/ppc32/config: ../../../kconfig/powerpc/apple32.config
 boot/kernel/ppc32/extraversion: ppc32
 boot/kernel/ppc32/use:
 	-*