[bugfix] fix pass bug: pass really rope dim for npu_rotary_embedding (#6880)
### What this PR does / why we need it?
pass really rope dim for npu_rotary_embedding
**before：**
q_rope, k_rope = torch.ops.vllm.npu_rotary_embedding(
positions, q_flat, k_flat, cos_sin_cache, self.head_dim,
**self.head_dim,** True
)
**after：**
q_rope, k_rope = torch.ops.vllm.npu_rotary_embedding(
positions, q_flat, k_flat, cos_sin_cache, self.head_dim,
**self.rope_dim,** True
)
### Does this PR introduce _any_ user-facing change?
no
### How was this patch tested?
- vLLM version: v0.16.0
- vLLM main:
15d76f74e2
---------
Signed-off-by: zjks98 <zhangjiakang4@huawei.com>
Signed-off-by: aipaes <82140963+aipaes@users.noreply.github.com>
Co-authored-by: zjks98 <zhangjiakang4@huawei.com>
1c0ecf806a