panfrost: Use the computed scale for fexp NaN propagation
This makes pow(NaN, x) return NaN rather than 1.0.
Fixes: 49939770 ("pan/bi: Don't lower fpow")
Closes: #5189 (closed)
This makes pow(NaN, x) return NaN rather than 1.0.
Fixes: 49939770 ("pan/bi: Don't lower fpow")
Closes: #5189 (closed)