squid: Link with libatomic on riscv

Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit 626209aabb5684316eba0d4b762980924d783c93)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-daemons/squid/squid_4.6.bb

@@ -40,6 +40,8 @@ inherit autotools pkgconfig useradd ptest perlnative
 
 LDFLAGS_append_mipsarch = " -latomic"
 LDFLAGS_append_powerpc = " -latomic"
+LDFLAGS_append_riscv64 = " -latomic"
+LDFLAGS_append_riscv32 = " -latomic"
 
 USERADD_PACKAGES = "${PN}"
 USERADD_PARAM_${PN} = "--system --no-create-home --home-dir /var/run/squid --shell /bin/false --user-group squid"