CONFIG_BF518_PPI_TMR_PG5 is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_BF518_PPI_TMR_PG5.
Result is shown for kernelversion 6.7-rc3

PG5 - PG7

configname: CONFIG_BF518_PPI_TMR_PG5

PPI / Timer Pins
└─>PG5 - PG7
In linux kernel since version 3.1 (release Date: 2011-10-24)  
PG{5,6,7} <-> {PPICLK/TMRCLK,TMR0/PPIFS1,TMR1/PPIFS2}