serial: Rename SERIAL_SUPPORT to SERIAL

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/mips/mach-mtmips/Kconfig b/arch/mips/mach-mtmips/Kconfig
index 747988a..9f300a9 100644
--- a/arch/mips/mach-mtmips/Kconfig
+++ b/arch/mips/mach-mtmips/Kconfig
@@ -68,7 +68,7 @@
 	select SPL_OF_CONTROL if SPL_DM
 	select SPL_SIMPLE_BUS if SPL_DM
 	select SPL_DM_SERIAL if SPL_DM
-	select SPL_CLK if SPL_DM && SPL_SERIAL_SUPPORT
+	select SPL_CLK if SPL_DM && SPL_SERIAL
 	select SPL_SYSRESET if SPL_DM
 	select SPL_OF_LIBFDT if SPL_OF_CONTROL
 	help
diff --git a/arch/mips/mach-mtmips/mt7620/serial.c b/arch/mips/mach-mtmips/mt7620/serial.c
index 44f061c..35544b8 100644
--- a/arch/mips/mach-mtmips/mt7620/serial.c
+++ b/arch/mips/mach-mtmips/mt7620/serial.c
@@ -23,7 +23,7 @@
 
 void mtmips_spl_serial_init(void)
 {
-#ifdef CONFIG_SPL_SERIAL_SUPPORT
+#ifdef CONFIG_SPL_SERIAL
 	void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
 
 #if CONFIG_CONS_INDEX == 1
@@ -32,5 +32,5 @@
 	clrsetbits_32(base + SYSCTL_GPIOMODE_REG, UARTF_SHARE_MODE_M,
 		      UARTF_MODE_UARTF_GPIO << UARTF_SHARE_MODE_S);
 #endif
-#endif /* CONFIG_SPL_SERIAL_SUPPORT */
+#endif /* CONFIG_SPL_SERIAL */
 }
diff --git a/arch/mips/mach-mtmips/mt7628/Kconfig b/arch/mips/mach-mtmips/mt7628/Kconfig
index b25b20f..f451c15 100644
--- a/arch/mips/mach-mtmips/mt7628/Kconfig
+++ b/arch/mips/mach-mtmips/mt7628/Kconfig
@@ -29,7 +29,7 @@
 
 config BOARD_VOCORE2
 	bool "VoCore2"
-	select SPL_SERIAL_SUPPORT
+	select SPL_SERIAL
 	select SPL_UART2_SPIS_PINMUX
 	help
 	  VoCore VoCore2 board has a MT7628 SoC with 128 MiB of RAM
@@ -39,7 +39,7 @@
 
 config SPL_UART2_SPIS_PINMUX
 	bool "Use alternative pinmux for UART2 in SPL stage"
-	depends on SPL_SERIAL_SUPPORT
+	depends on SPL_SERIAL
 	help
 	  Select this if the UART2 of your board is connected to GPIO 16/17
 	  (shared with SPIS) rather than the usual GPIO 20/21.
diff --git a/arch/mips/mach-mtmips/mt7628/serial.c b/arch/mips/mach-mtmips/mt7628/serial.c
index a7d3247..e5f3f87 100644
--- a/arch/mips/mach-mtmips/mt7628/serial.c
+++ b/arch/mips/mach-mtmips/mt7628/serial.c
@@ -11,7 +11,7 @@
 
 void mtmips_spl_serial_init(void)
 {
-#ifdef CONFIG_SPL_SERIAL_SUPPORT
+#ifdef CONFIG_SPL_SERIAL
 	void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
 
 #if CONFIG_CONS_INDEX == 1
@@ -30,5 +30,5 @@
 		      1 << SPIS_MODE_S);
 #endif /* CONFIG_SPL_UART2_SPIS_PINMUX */
 #endif /* CONFIG_CONS_INDEX */
-#endif /* CONFIG_SPL_SERIAL_SUPPORT */
+#endif /* CONFIG_SPL_SERIAL */
 }
diff --git a/arch/mips/mach-mtmips/spl.c b/arch/mips/mach-mtmips/spl.c
index 95201b8..fe5b49e 100644
--- a/arch/mips/mach-mtmips/spl.c
+++ b/arch/mips/mach-mtmips/spl.c
@@ -17,7 +17,7 @@
 {
 	spl_init();
 
-#ifdef CONFIG_SPL_SERIAL_SUPPORT
+#ifdef CONFIG_SPL_SERIAL
 	/*
 	 * mtmips_spl_serial_init() is useful if debug uart is enabled,
 	 * or DM based serial is not enabled.