[PATCH] fix arch/ppc64/kernel/rtc.c warnings

[Joel Schopp]

> If CONFIG_PROC_FS is not asserted, the compiler emits:
> 
>  arch/ppc64/kernel/rtc.c:257: warning: `rtc_read_proc' defined but not used
> 
> Here is a patch to fix that.  It can provide a decent space savings:
> 
>    text    data     bss     dec     hex filename
>  - 2956     728       0    3684     e64 arch/ppc64/kernel/rtc.o
>  + 2500     664       0    3164     c5c arch/ppc64/kernel/rtc.o
> 
> Signed-off-by: Amos Waterland <apw at us.ibm.com>
> 

Looks good, let's merge it.

Acked-by: Joel Schopp <jschopp at austin.ibm.com>