standalone_systests: guard hsv39.h definitions on v81+ toolchain

The Hexagon toolchain's tlb.h provides TLBEntry64, HSV39_PageSize,
hsv39_make_tlb_entry(), and hsv39_write_tlb_entry() when
__HEXAGON_ARCH__ is greater than 80.  Building hsv39_tlb with -mv81
therefore collides with the local fallback definitions in hsv39.h.

Guard the local definitions with #if __HEXAGON_ARCH__ <= 80 so older
builds keep using the fallback while v81 and later use the toolchain
versions.

Signed-off-by: Marco Liebel <marco.liebel@oss.qualcomm.com>

Author: quic-mliebel

standalone_systests/include/hsv39.h

@@ -19,6 +19,9 @@ static inline uint64_t pow4(uint64_t n)
     return 1ull << (n * 2);
 }
 
+/* The toolchain's tlb.h provides these definitions for v81 and later. */
+#if __HEXAGON_ARCH__ <= 80
+
 /* HSV39 page size enumeration - powers of 4 encoding */
 typedef enum {
     HSV39_PAGE_1M   = 0x01,
@@ -77,6 +80,8 @@ static inline void hsv39_write_tlb_entry(uint64_t entry_raw, int index)
     tlbw(entry_raw, index);
 }
 
+#endif /* __HEXAGON_ARCH__ <= 80 */
+
 static inline void remove_hsv39_trans(int index)
 {
     TLBEntry64 entry;