Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h
index 82cb4eb..e3f1cdd 100644
--- a/include/acpi/ghes.h
+++ b/include/acpi/ghes.h
@@ -13,7 +13,6 @@
  * estatus: memory buffer for error status block, allocated during
  * HEST parsing.
  */
-#define GHES_TO_CLEAR		0x0001
 #define GHES_EXITING		0x0002
 
 struct ghes {
@@ -22,7 +21,6 @@
 		struct acpi_hest_generic_v2 *generic_v2;
 	};
 	struct acpi_hest_generic_status *estatus;
-	u64 buffer_paddr;
 	unsigned long flags;
 	union {
 		struct list_head list;
@@ -52,6 +50,8 @@
 	GHES_SEV_PANIC = 0x3,
 };
 
+int ghes_estatus_pool_init(int num_ghes);
+
 /* From drivers/edac/ghes_edac.c */
 
 #ifdef CONFIG_EDAC_GHES