Tools: Tune: Eq: Fix IIR data files names in example_spk_eq.m

The IIR files export overwrites the FIR files due to mistake
in the script.

Fixes commit 5ddbd34 ("Tools: Tune: EQ: Add tplg2 blobs create")

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

tools/tune/eq/example_spk_eq.m

@@ -30,9 +30,9 @@ function example_spk_eq()
 fir.bin = 'eq_fir_spk.bin';
 fir.tplg1 = 'eq_fir_coef_spk.m4';
 fir.tplg2 = 'example_speaker.conf';
-iir.txt = 'eq_fir_spk.txt';
-iir.bin = 'eq_fir_spk.bin';
-iir.tplg1 = 'eq_fir_coef_spk.m4';
+iir.txt = 'eq_iir_spk.txt';
+iir.bin = 'eq_iir_spk.bin';
+iir.tplg1 = 'eq_iir_coef_spk.m4';
 iir.tplg2 = 'example_speaker.conf';
 
 %% Get defaults for equalizer design