cpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c

This is another alloc_bootmem() -> kzalloc() change, this time to
fix the non-fatal badness caused when booting with a cpm2_uart console.

Signed-off-by: Mark Ware <mware@elphinstone.net>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
index 141c0a3..a9802e7 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -132,7 +132,7 @@
 	memsz = L1_CACHE_ALIGN(pinfo->rx_nrfifos * pinfo->rx_fifosize) +
 	    L1_CACHE_ALIGN(pinfo->tx_nrfifos * pinfo->tx_fifosize);
 	if (is_con) {
-		mem_addr = alloc_bootmem(memsz);
+		mem_addr = kzalloc(memsz, GFP_NOWAIT);
 		dma_addr = virt_to_bus(mem_addr);
 	}
 	else