RT288X systems may have a non-zero ramstart causing problems with memory
reservations and boot hangs, as well as messages like:
  Wasting 1048576 bytes for tracking 32768 unused pages

Both are alleviated by selecting MIPS_AUTO_PFN_OFFSET for such
platforms.

Tested on a Belkin F5D8235 v1 RT2880 device.

Link: 
https://lore.kernel.org/linux-mips/20180820233111.xww5232dxbuouf4n@pburton-laptop/

Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
Cc: Mike Rapoport <r...@kernel.org>
---
 arch/mips/ralink/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
index c20c44788b62..7c6de7f8484e 100644
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -31,6 +31,7 @@ choice
 
        config SOC_RT288X
                bool "RT288x"
+               select MIPS_AUTO_PFN_OFFSET
                select MIPS_L1_CACHE_SHIFT_4
                select HAVE_LEGACY_CLK
                select HAVE_PCI
-- 
2.31.1

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