src/meta-openembedded:rsyslog: Fix function inline errors in debug op…

…timization

Compiler does not inline any functions when using debug optimization (-Og).
Hence, remove -Winline flag when compiling with debug optimization.

Backport upstream fix: rsyslog/librelp#258
Remove previous local fix: rsyslog/librelp#256

Signed-off-by: Nicolas Marguet <nicolas.marguet@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>