[Skiboot] [PATCH] surv: Fix "hearbeat" typo

[Anton Blanchard]

Hi Stewart,

> Are you getting a lot of these two? That would kind of concern me as
> you shouldn't ordinarily get these.
> 
> Not on a larger P8 system by any chance?

I'm not, I'm just getting these:

[20405211202285,7] SURV: Sending the hearbeat command to FSP
[20405220455009,7] SURV: Received heartbeat acknowledge from FSP
[20436391277825,7] SURV: Sending the hearbeat command to FSP
[20436400534449,7] SURV: Received heartbeat acknowledge from FSP

But I figured I'd clean all the log messages in the area.

Anton