runtime: more NOPTR
Fixes linux builds (_vdso); may fix others.
I can at least cross-compile cmd/go for every
implemented system now.
TBR=iant
CC=golang-codereviews
https://golang.org/cl/142630043
diff --git a/src/runtime/rt0_linux_arm.s b/src/runtime/rt0_linux_arm.s
index 8af3d35..5f521d2 100644
--- a/src/runtime/rt0_linux_arm.s
+++ b/src/runtime/rt0_linux_arm.s
@@ -77,7 +77,7 @@
DATA bad_abi_msg+0x20(SB)/8, $"EABI ker"
DATA bad_abi_msg+0x28(SB)/4, $"nels"
DATA bad_abi_msg+0x2c(SB)/1, $0xa
-GLOBL bad_abi_msg(SB), $45
+GLOBL bad_abi_msg(SB), RODATA, $45
TEXT oabi_syscall<>(SB),NOSPLIT,$-4
ADD $1, PC, R4
