package/gcc: 2024.12 ARC gcc is in fact based on GCC 14.x

Contrary to what was done in
8ef2ba2ec3cedae92c585135d3a1c5ae3e0f63d8 ("package/{gcc, binutils,
gdb}: update ARC version to 2024.12"), the ARC gcc version 2024.12 is
in fact based on GCC 14.2. This can be verified at:

  https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/tag/arc-2024.12-release

Which states "GCC 14.2 with ARC patches".

Fixes: 8ef2ba2ec3cedae92c585135d3a1c5ae3e0f63d8 ("package/{gcc, binutils, gdb}: update ARC version to 2024.12")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Romain Naour <romain.naour@smile.fr>

package/gcc/Config.in.host

@@ -10,10 +10,10 @@ choice
 	  Select the version of gcc you wish to use.
 
 config BR2_GCC_VERSION_ARC
-	bool "gcc arc (15.1)"
+	bool "gcc arc (14.2)"
 	# Only supported architecture
 	depends on BR2_arc
-	select BR2_TOOLCHAIN_GCC_AT_LEAST_15
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_14
 
 config BR2_GCC_VERSION_POWERPC_SPE
 	bool "gcc powerpc spe"