Adjust NVPTX ABI test for LLVM 20

LLVM 20 prints additional .ptr .align 4 annotations.

Author: nikic

tests/assembly/nvptx-kernel-abi/nvptx-kernel-args-abi-v7.rs

@@ -242,7 +242,7 @@ pub unsafe extern "ptx-kernel" fn f_float_array_arg(_a: [f32; 5]) {}
 //pub unsafe extern "ptx-kernel" fn f_u128_array_arg(_a: [u128; 5]) {}
 
 // CHECK: .visible .entry f_u32_slice_arg(
-// CHECK: .param .u64 f_u32_slice_arg_param_0
+// CHECK: .param .u64 {{(\.ptr \.align 4 )?}}f_u32_slice_arg_param_0
 // CHECK: .param .u64 f_u32_slice_arg_param_1
 #[no_mangle]
 pub unsafe extern "ptx-kernel" fn f_u32_slice_arg(_a: &[u32]) {}