powerpc: move ADDR_MAP to Kconfig

Move ADDR_MAP related config options from include/configs/*.h to the
proper place in lib/Kconfig. This has been done using
./tools/moveconfig.py and manual inspection of the generated changes.
This is a preparation to use ADDR_MAP helper on ARM 32bit Raspberry Pi4
board for mapping the PCIe XHCI MMIO, which is above the 4GiB identity
mapping limit.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/MPC8641HPCN_defconfig b/configs/MPC8641HPCN_defconfig
index 7ce7891..b60813d 100644
--- a/configs/MPC8641HPCN_defconfig
+++ b/configs/MPC8641HPCN_defconfig
@@ -42,4 +42,6 @@
 CONFIG_USB=y
 CONFIG_USB_KEYBOARD=y
 CONFIG_VIDEO=y
+CONFIG_ADDR_MAP=y
+CONFIG_SYS_NUM_ADDR_MAP=8
 CONFIG_OF_LIBFDT=y