[Skiboot] [PATCH 4/6] Add prototype in asm-offsets to silence clang

[Stewart Smith]

Joel Stanley <joel at jms.id.au> writes:

> asm/asm-offsets.c:31:5: error: no previous prototype for function 'main'
>       [-Werror,-Wmissing-prototypes]
>       int main(void)
>
> Signed-off-by: Joel Stanley <joel at jms.id.au>

Merged as b4769a78327e3216c741b1edd556e1e9265f1109, thanks!