[RFC v6 16/25] powerpc, fbdev: Use NV_CMODE and NV_VMODE only when CONFIG_PPC32 and CONFIG_PPC_PMAC and CONFIG_NVRAM

This patch addresses inconsistencies in Mac framebuffer drivers and their use of Kconfig symbols relating to NVRAM, so PPC64 can use CONFIG_NVRAM. Macintosh framebuffer drivers use default settings for color mode and video mode that are found in NVRAM. On PCI Macs, MacOS stores display settings

[RFC v6 16/25] powerpc, fbdev: Use NV_CMODE and NV_VMODE only when CONFIG_PPC32 and CONFIG_PPC_PMAC and CONFIG_NVRAM

This patch addresses inconsistencies in Mac framebuffer drivers and their use of Kconfig symbols relating to NVRAM, so PPC64 can use CONFIG_NVRAM. Macintosh framebuffer drivers use default settings for color mode and video mode that are found in NVRAM. On PCI Macs, MacOS stores display settings