ARM: proc-arm94*.S: fix setup function
Both ARM946 and ARM940 setup functions were corrupting r1 and r2, which is not permissible - these are used to carry the machine ID and boot data into the kernel, and must be preserved. The code responsible for this was the same in both files: they were using the registers to generate a protection region register value. Fix this by turning this process into a macro, and using that macro in both these files with an alternative register allocation. r0, r3 and r7 can be used for temporary values here. Reported-by: NAlex Dumitrache <broscutamaker@gmail.com> Tested-by: NGeorg Hofstetter <g3gg0.de@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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