staging: most: fix argument name of DIM_GetChannelState

The second argument name of DIM_GetChannelState declaration changes from
dim_ch_state_ptr to state_ptr. The DIM_GetChannelState declaration and
definition has same argument name as state_ptr.
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/most/hdm-dim2/dim2_hal.h

@@ -96,7 +96,7 @@ void dim_service_irq(struct dim_channel *const *channels);
 u8 dim_service_channel(struct dim_channel *ch);
 
 struct dim_ch_state_t *DIM_GetChannelState(struct dim_channel *ch,
-		struct dim_ch_state_t *dim_ch_state_ptr);
+					   struct dim_ch_state_t *state_ptr);
 
 bool DIM_EnqueueBuffer(struct dim_channel *ch, u32 buffer_addr,
 		       u16 buffer_size);