etnaviv: fix bitmask typo

Fixes: d92689c46f ("etnaviv: nir: add native integers (HALTI2+)")
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Jonathan Marek <jonathan@marek.ca>

src/gallium/drivers/etnaviv/etnaviv_asm.h

@@ -150,7 +150,7 @@ static inline struct etna_inst_src
 etna_immediate_float(float x)
 {
 	uint32_t bits = fui(x);
-	assert((bits && 0xfff) == 0); /* 12 lsb cut off */
+	assert((bits & 0xfff) == 0); /* 12 lsb cut off */
 	return etna_immediate_src(0, bits >> 12);
 }