staging: kpc2000: use kzalloc(sizeof(var)...) in cell_probe.c

Fixes checkpatch.pl warning "Prefer kzalloc(sizeof(*kudev)...) over
kzalloc(sizeof(struct kpc_uio_device)...)"
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/kpc2000/kpc2000/cell_probe.c

@@ -292,7 +292,7 @@ static int probe_core_uio(unsigned int core_num, struct kp2000_device *pcard,
 
 	dev_dbg(&pcard->pdev->dev, "Found UIO core:   type = %02d  dma = %02x / %02x  offset = 0x%x  length = 0x%x (%d regs)\n", cte.type, KPC_OLD_S2C_DMA_CH_NUM(cte), KPC_OLD_C2S_DMA_CH_NUM(cte), cte.offset, cte.length, cte.length / 8);
 
-	kudev = kzalloc(sizeof(struct kpc_uio_device), GFP_KERNEL);
+	kudev = kzalloc(sizeof(*kudev), GFP_KERNEL);
 	if (!kudev) {
 		dev_err(&pcard->pdev->dev, "probe_core_uio: failed to kzalloc kpc_uio_device\n");
 		return -ENOMEM;