Improve glxinfo call, OpenBSD sensors fix (#1494)

* Use `glxinfo -B' instead of `glxinfo'

It's enough to get the gpu infos and it's way faster.

* OpenBSD: fix cpu sensors informations, add ksmn(4) and adt(4)

neofetch

@@ -2246,8 +2246,7 @@ get_cpu() {
                 ;;
                 "OpenBSD"* | "Bitrig"*)
                     deg="$(sysctl hw.sensors | \
-                           awk -F '=| degC' '/lm0.temp|cpu0.temp/ {print $2; exit}')"
-                    deg="${deg/00/0}"
+                        awk -F'=|degC' '/(ksmn|adt|lm|cpu)0.temp0/ {printf("%2.1f", $2); exit}')"
                 ;;
             esac
         ;;
@@ -2529,7 +2528,7 @@ get_gpu() {
                 ;;
 
                 *)
-                    gpu="$(glxinfo | grep -F 'OpenGL renderer string')"
+                    gpu="$(glxinfo -B | grep -F 'OpenGL renderer string')"
                     gpu="${gpu/OpenGL renderer string: }"
                 ;;
             esac