[U-Boot] am335x: board.c: clang warning

[Jeroen Hofstee]

Hello Tom,

The following clang warnings are not trivial to fix for me,
And since the file in question has many contributers I am not
sure who is responsible nowadays. Can you make sure this end up
at someone who knows about the am335x, since this sound a bit
fishy.. (but likely works somehow...)

Regards,
Jeroen

e.g. make am335x_boneblack_config

board/ti/am335x/board.c:87:44: warning: signed shift result
(0x480000000) requires 36 bits to represent, but 'int' only has 32 bits
[-Wshift-overflow]
        .datardsratio0 = ((MT47H128M16RT25E_RD_DQS<<30) |
                           ~~~~~~~~~~~~~~~~~~~~~~~^ ~~
board/ti/am335x/board.c:103:49: warning: signed shift result
(0x2000000000) requires 39 bits to represent, but 'int' only has 32 bits
[-Wshift-overflow]
        .datafwsratio0 = ((MT47H128M16RT25E_PHY_FIFO_WE<<30) |
                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ ~~
board/ti/am335x/board.c:107:49: warning: signed shift result
(0x1000000000) requires 38 bits to represent, but 'int' only has 32 bits
[-Wshift-overflow]
        .datawrsratio0 = ((MT47H128M16RT25E_PHY_WR_DATA<<30) |
                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ ~~
3 warnings generated.