errinjct: Correct config_addr parsing
errinjct: Correct config_addr parsing

A recent patch (commit id: ccc9c72cec2a4) to move the errinjct function to
using a common read_file() routine did not correctly update the
get_config_addr_from_reg() function. This patch corrects this to return the
proper config address.

Signed-off-by: Nathan Fontenot <4b7bfe500077bf77c5456931a34b0b70e36e0bc6@linux.vnet.ibm.com>

shenki/powerpc-utils,shenki/powerpc-utils,shenki/powerpc-utils