powerpc/85xx: fix PHYS_64BIT selection for P1022DS

Remove wrong CONFIG_ prefix in Kconfig file.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index 1e66edb..7f84cfd 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -80,7 +80,7 @@
 config P1022_DS
 	bool "Freescale P1022 DS"
 	select DEFAULT_UIMAGE
-	select CONFIG_PHYS_64BIT	# The DTS has 36-bit addresses
+	select PHYS_64BIT	# The DTS has 36-bit addresses
 	select SWIOTLB
 	help
 	  This option enables support for the Freescale P1022DS reference board.