Bug fix: Define PH2SO4 and PSO4AQ in species_database.yml

In pull request #1569, PH2SO4 and PSO4AQ were added as species in
fullchem.eqn but were never defined in species_database.yml. This led to
an error when registering species in state_chm_mod.F90

Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>

run/shared/species_database.yml

@@ -3712,6 +3712,10 @@ PH2O2:
   FullName: Dummy species to track production rate of H2O2
   Is_Gas: true
   MW_g: 34.02
+PH2SO4:
+  FullName: SO4 from gas-phase chemistry
+  Is_Gas: true
+  MW_g: 96.06
 PHEN:
   DD_F0: 1.0
   DD_Hstar: 2.8e+3
@@ -4082,6 +4086,10 @@ PSO4:
   FullName: Dummy species to track production of SO4
   Is_Gas: true
   MW_g: 96.06
+PSO4AQ:
+  FullName: SO4 from cloud chemistry
+  Is_Gas: true
+  MW_g: 96.06
 PYAC:
   DD_F0: 1.0
   DD_Hstar: 3.14e+5