[NFCI] Move Keccak rhotates tables to rodata

rhotates tables are placed to .text section which confuses tools such as
BOLT. Move them to rodata to unbreak and avoid polluting icache/iTLB
with data.

1. Update patch file using the steps in scripts/copy_from_xkcp/README
2. Apply the updated patch with scripts/copy_from_xkcp/package.sh

Sync with XKCP upstream: XKCP/XKCP#137
Similar fix in OpenSSL: openssl/openssl#21440
Redo of #1508

Signed-off-by: Amir Ayupov <aaupov@fb.com>

scripts/copy_from_xkcp/patches/lib_low_KeccakP-1600_AVX2_KeccakP-1600-AVX2.s

@@ -374,7 +374,7 @@
      pop             %rcx
      pop             %rdx
      pop             %rsi
-@@ -1010,9 +1038,9 @@
+@@ -1010,10 +1038,13 @@
      cmp             %rsi, %rcx
      jae             KeccakP1600_12rounds_FastLoop_Absorb_Not17Lanes
      jmp             KeccakP1600_12rounds_FastLoop_Absorb_Exit
@@ -384,6 +384,9 @@
 -.endif
 +#endif
 
++#ifndef old_gas_syntax
++.section .rodata
++#endif
  .equ    ALLON,        0xFFFFFFFFFFFFFFFF
 
 

src/common/sha3/xkcp_low/KeccakP-1600/avx2/KeccakP-1600-AVX2.S

@@ -1042,6 +1042,9 @@ KeccakP1600_12rounds_FastLoop_Absorb_LanesAddLoop:
 .size   KeccakP1600_12rounds_FastLoop_Absorb,.-KeccakP1600_12rounds_FastLoop_Absorb
 #endif
 
+#ifndef old_gas_syntax
+.section .rodata
+#endif
 .equ    ALLON,        0xFFFFFFFFFFFFFFFF
 
 .balign 64