cpu/intel/socket_*: Clean up Kconfig files

Remove SSE when SSE is already selected by supported CPUs.
Add "config SOCKET_SPECIFIC_OPTIONS" section to socket_p/Kconfig.

Change-Id: If2265ac716e90720e7ccc550239737d40c2f7a0a
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69447
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/cpu/intel/socket_441/Kconfig

@@ -7,7 +7,6 @@ config SOCKET_SPECIFIC_OPTIONS
 	def_bool y
 	select CPU_INTEL_MODEL_106CX
 	select MMX
-	select SSE
 	select SETUP_XIP_CACHE
 
 config DCACHE_RAM_BASE

src/cpu/intel/socket_BGA956/Kconfig

@@ -1,11 +1,13 @@
 config CPU_INTEL_SOCKET_BGA956
 	bool
-	select CPU_INTEL_MODEL_1067X
-	select MMX
-	select SSE
 
 if CPU_INTEL_SOCKET_BGA956
 
+config SOCKET_SPECIFIC_OPTIONS
+	def_bool y
+	select CPU_INTEL_MODEL_1067X
+	select MMX
+
 config DCACHE_RAM_BASE
 	hex
 	default 0xfefc0000

src/cpu/intel/socket_p/Kconfig

@@ -1,11 +1,14 @@
 config CPU_INTEL_SOCKET_P
 	bool
+
+if CPU_INTEL_SOCKET_P
+
+config SOCKET_SPECIFIC_OPTIONS
+	def_bool y
 	select CPU_INTEL_MODEL_1067X
 	select CPU_INTEL_MODEL_6FX
 	select MMX
 
-if CPU_INTEL_SOCKET_P
-
 config DCACHE_RAM_BASE
 	hex
 	default 0xfefc0000