ARM: debug-ll: move DEBUG_LL_UART_EFM32 to correct Kconfig location

I accidentally move the DEBUG_LL_UART_EFM32 option when sorting all
other options alphanumerically, but it belongs into the same group
as DEBUG_LL_UART_8250 and DEBUG_LL_UART_PL01X.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 1dc93416 ("ARM: debug-ll: reorder Kconfig alphanumerically")

arch/arm/Kconfig.debug

@@ -246,20 +246,6 @@ choice
 		  Say Y here if you want the debug print routines to direct
 		  their output to the UA0 serial port in the CX92755.
 
-	config DEBUG_LL_UART_EFM32
-		bool "Kernel low-level debugging via efm32 UART"
-		depends on ARCH_EFM32
-		help
-		  Say Y here if you want the debug print routines to direct
-		  their output to an UART or USART port on efm32 based
-		  machines. Use the following addresses for DEBUG_UART_PHYS:
-
-		    0x4000c000 | USART0
-		    0x4000c400 | USART1
-		    0x4000c800 | USART2
-		    0x4000e000 | UART0
-		    0x4000e400 | UART1
-
 	config DEBUG_EP93XX
 		bool "Kernel low-level debugging messages via ep93xx UART"
 		depends on ARCH_EP93XX
@@ -1299,6 +1285,20 @@ choice
 		  options; the platform specific options are deprecated
 		  and will be soon removed.
 
+	config DEBUG_LL_UART_EFM32
+		bool "Kernel low-level debugging via efm32 UART"
+		depends on ARCH_EFM32
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to an UART or USART port on efm32 based
+		  machines. Use the following addresses for DEBUG_UART_PHYS:
+
+		    0x4000c000 | USART0
+		    0x4000c400 | USART1
+		    0x4000c800 | USART2
+		    0x4000e000 | UART0
+		    0x4000e400 | UART1
+
 	config DEBUG_LL_UART_PL01X
 		bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
 		help