Remove southbridges after K8 board removals

Change-Id: Ib6935c026e2302b037fc82be64163f10bf775751
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/26672
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/northbridge/amd/amdk8/incoherent_ht.c

@@ -155,10 +155,6 @@ static uint16_t ht_read_freq_cap(pci_devfn_t dev, uint8_t pos)
 
 	printk(BIOS_SPEW, "pos=0x%x, filtered freq_cap=0x%x\n", pos, freq_cap);
 
-#if IS_ENABLED(CONFIG_SOUTHBRIDGE_VIA_SUBTYPE_K8M890)
-	freq_cap &= 0x3f;
-	printk(BIOS_INFO, "Limiting HT to 800/600/400/200 MHz until K8M890 HT1000 is fixed.\n");
-#endif
 	return freq_cap;
 }
 

src/northbridge/amd/amdk8/raminit_f_dqs.c

@@ -20,8 +20,6 @@
 #include <arch/early_variables.h>
 #if IS_ENABLED(CONFIG_SOUTHBRIDGE_AMD_SB700)
 #include <southbridge/amd/sb700/sb700.h>
-#else /* IS_ENABLED(CONFIG_SOUTHBRIDGE_VIA_K8T890) */
-#include <southbridge/via/k8t890/k8t890.h>
 #endif
 
 //0: mean no debug info