ARM: 7029/1: Make cpu_architecture into a global variable
The CPU architecture really should not be changing at runtime, so make it a global variable instead of a function. The cpu_architecture() function declared in <asm/system.h> remains the correct way to read this variable from C code. Signed-off-by: NDave Martin <dave.martin@linaro.org> Reviewed-by: NJon Medhurst <tixy@yxit.co.uk> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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