treewide/Kconfig: Drop unneeded empty lines

Change-Id: If8aa28a22625b7b2cf9b58958de87ee752f637f6
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45247
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
diff --git a/payloads/external/LinuxBoot/Kconfig b/payloads/external/LinuxBoot/Kconfig
index 591d649..6171217 100644
--- a/payloads/external/LinuxBoot/Kconfig
+++ b/payloads/external/LinuxBoot/Kconfig
@@ -135,7 +135,6 @@
 
 endchoice
 
-
 config LINUXBOOT_DTB_FILE
 	string "Compiled devicetree file"
 	depends on LINUXBOOT_ARM64 || LINUXBOOT_RISCV
diff --git a/payloads/libpayload/arch/x86/Kconfig b/payloads/libpayload/arch/x86/Kconfig
index 2be47bc..05cf58b 100644
--- a/payloads/libpayload/arch/x86/Kconfig
+++ b/payloads/libpayload/arch/x86/Kconfig
@@ -52,5 +52,4 @@
 
 endchoice
 
-
 endif
diff --git a/src/Kconfig b/src/Kconfig
index d6b703b..e46a6e6 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -1144,7 +1144,6 @@
 
 endmenu
 
-
 ###############################################################################
 # Set variables with no prompt - these can be set anywhere, and putting at
 # the end of this file gives the most flexibility.
diff --git a/src/mainboard/biostar/Kconfig b/src/mainboard/biostar/Kconfig
index 1122c43..ae502cb 100644
--- a/src/mainboard/biostar/Kconfig
+++ b/src/mainboard/biostar/Kconfig
@@ -11,7 +11,6 @@
 
 source "src/mainboard/biostar/*/Kconfig"
 
-
 config MAINBOARD_VENDOR
 	default "Biostar"
 
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig
index 3d9b08d..824b1b0 100644
--- a/src/soc/amd/picasso/Kconfig
+++ b/src/soc/amd/picasso/Kconfig
@@ -522,7 +522,6 @@
 
 endmenu
 
-
 config VBOOT
 	select VBOOT_VBNV_CMOS
 	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH