arm/build: Add missing sections

Add missing text stub sections .vfp11_veneer and .v4_bx, as well as
missing DWARF sections, when present in the build.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Russell King <linux@armlinux.org.uk>
Link: https://lore.kernel.org/r/20200821194310.3089815-18-keescook@chromium.org

arch/arm/include/asm/vmlinux.lds.h

@@ -59,7 +59,9 @@
 #define ARM_STUBS_TEXT							\
 		*(.gnu.warning)						\
 		*(.glue_7)						\
-		*(.glue_7t)
+		*(.glue_7t)						\
+		*(.vfp11_veneer)                                        \
+		*(.v4_bx)
 
 #define ARM_TEXT							\
 		IDMAP_TEXT						\

arch/arm/kernel/vmlinux-xip.lds.S

@@ -150,6 +150,7 @@ SECTIONS
 	_end = .;
 
 	STABS_DEBUG
+	DWARF_DEBUG
 	ARM_DETAILS
 }
 

arch/arm/kernel/vmlinux.lds.S

@@ -149,6 +149,7 @@ SECTIONS
 	_end = .;
 
 	STABS_DEBUG
+	DWARF_DEBUG
 	ARM_DETAILS
 }