rtl838x: remove and add some empty lines

Do some minor empty lines cleanup, i.e. remove those at EOF and
add some for cosmetic reasons/consistency.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/rtl838x/files-5.4/arch/mips/rtl838x/prom.c

@@ -171,4 +171,3 @@ void __init prom_init(void)
 	pr_info("SoC Type: %s\n", get_system_type());
 	prom_init_cmdline();
 }
-

target/linux/rtl838x/files-5.4/arch/mips/rtl838x/serial.c

@@ -8,6 +8,7 @@
  * Copyright (C) 2020 B. Koblitz
  *
  */
+
 #include <linux/types.h>
 #include <linux/ctype.h>
 #include <linux/kernel.h>

target/linux/rtl838x/files-5.4/arch/mips/rtl838x/setup.c

@@ -8,6 +8,7 @@
  * Copyright (C) 2006-2012 Tony Wu (tonywu@realtek.com)
  *
  */
+
 #include <linux/console.h>
 #include <linux/init.h>
 #include <linux/clk.h>

target/linux/rtl838x/files-5.4/drivers/gpio/gpio-rtl838x.c

@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
+
 #include <linux/gpio/driver.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>

target/linux/rtl838x/profiles/00-default.mk

@@ -10,4 +10,5 @@ endef
 define Profile/Default/Description
 	Default package set compatible with most boards.
 endef
+
 $(eval $(call Profile,Default))