radv: enable lower_fmod for the LLVM path

This lowers fmod and frem at NIR level like RadeonSI. fmod is
already lowered directly in NIR->LLVM, and frem will be lowered by
LLVM anyways.

This fixes a LLVM crash with:
dEQP-VK.glsl.builtin.precision_fp16_storage32b.frem.compute.scalar.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
index 18608d8..09c5ce6 100644
--- a/src/amd/vulkan/radv_shader.c
+++ b/src/amd/vulkan/radv_shader.c
@@ -61,6 +61,7 @@
 	.lower_device_index_to_zero = true,
 	.lower_fsat = true,
 	.lower_fdiv = true,
+	.lower_fmod = true,
 	.lower_bitfield_insert_to_bitfield_select = true,
 	.lower_bitfield_extract = true,
 	.lower_sub = true,