add enhancment against spectre and configuratation that enables using external keyboard as per board config

Signed-off-by: notgivenby <notgivenby@gmail.com>

Author: notgivenby

config/linux-t480.config

@@ -376,7 +376,8 @@ CONFIG_HAVE_LIVEPATCH=y
 CONFIG_CC_HAS_RETURN_THUNK=y
 CONFIG_SPECULATION_MITIGATIONS=y
 CONFIG_PAGE_TABLE_ISOLATION=y
-# CONFIG_RETPOLINE is not set
+CONFIG_RETPOLINE=y
+CONFIG_RETHUNK=y
 CONFIG_CPU_IBRS_ENTRY=y
 CONFIG_ARCH_HAS_ADD_PAGES=y
 CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
@@ -1980,6 +1981,9 @@ CONFIG_USB_EHCI_HCD_PLATFORM=m
 # CONFIG_USB_OXU210HP_HCD is not set
 # CONFIG_USB_ISP116X_HCD is not set
 # CONFIG_USB_FOTG210_HCD is not set
+CONFIG_USB_OHCI_HCD=m
+CONFIG_USB_OHCI_HCD_PCI=m
+# CONFIG_USB_OHCI_HCD_PLATFORM is not set
 # CONFIG_USB_OHCI_HCD is not set
 # CONFIG_USB_UHCI_HCD is not set
 # CONFIG_USB_SL811_HCD is not set