SAMSUNG: serial: modify name from s5pc1xx to s5p

Because of other s5p series SoC will use these serial functions,
modify function's name and structure's name.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index d2b4820..c731bfb 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -36,7 +36,7 @@
 COBJS-$(CONFIG_SYS_NS16550) += ns16550.o
 COBJS-$(CONFIG_DRIVER_S3C4510_UART) += s3c4510b_uart.o
 COBJS-$(CONFIG_S3C64XX) += s3c64xx.o
-COBJS-$(CONFIG_S5PC1XX) += serial_s5pc1xx.o
+COBJS-$(CONFIG_S5PC1XX) += serial_s5p.o
 COBJS-$(CONFIG_SYS_NS16550_SERIAL) += serial.o
 COBJS-$(CONFIG_CLPS7111_SERIAL) += serial_clps7111.o
 COBJS-$(CONFIG_IMX_SERIAL) += serial_imx.o