eal/arm64: fix platform register bit

[ upstream commit 20c7744 ]

REG_PLATFORM only uses bit 0 to indicate whether the value retrieved
from hardware matches PLATFORM_STR.

Fixes: 97523f8 ("eal/arm: add CPU flags for ARMv8")

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Reviewed-by: Jerin Jacob <jerinj@marvell.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>

lib/librte_eal/arm/rte_cpuflags.c

@@ -108,7 +108,7 @@ const struct feature_entry rte_cpu_feature_table[] = {
 	FEAT_DEF(SVEF32MM,	REG_HWCAP2,   10)
 	FEAT_DEF(SVEF64MM,	REG_HWCAP2,   11)
 	FEAT_DEF(SVEBF16,	REG_HWCAP2,   12)
-	FEAT_DEF(AARCH64,	REG_PLATFORM, 1)
+	FEAT_DEF(AARCH64,	REG_PLATFORM,  0)
 };
 #endif /* RTE_ARCH */