Kconfig: Remove unnecessary choice names

The only reason to use a named choice statement is if you plan on
having the choice statement in multiple places. Since none of these
are used in multiple places, we can get rid of the names.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Ie5f84e9dc38050234976bd193ac5fbf649e564f4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43765
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig
index 3bdaad2..aaabf43 100644
--- a/src/soc/amd/picasso/Kconfig
+++ b/src/soc/amd/picasso/Kconfig
@@ -271,7 +271,7 @@
 	  2: 0xfedc3000
 	  3: 0xfedcf000
 
-choice PICASSO_UART_CLOCK_SOURCE
+choice
 	prompt "UART Frequency"
 	depends on PICASSO_CONSOLE_UART
 	default PICASSO_UART_48MZ